Still, the severe and prolonged struggle for self-control told upon
Lilla.  She looked, as she felt, ill and weak.  She was really in a
nerveless and prostrate condition, with black circles round her eyes,
pale even to her lips, and with an instinctive trembling which she was
quite unable to repress.  It was for her a sad mischance that Mimi was
away, for her love would have seen through all obscuring causes, and have
brought to light the girl's unhappy condition of health.  Lilla was
utterly unable to do anything to escape from the ordeal before her; but
her cousin, with the experience of her former struggles with Mr. Caswall
and of the condition in which these left her, would have taken steps--even
peremptory ones, if necessary--to prevent a repetition.

Edgar arrived punctually to the time appointed by herself.  When Lilla,
through the great window, saw him approaching the house, her condition of
nervous upset was pitiable.  She braced herself up, however, and managed
to get through the interview in its preliminary stages without any
perceptible change in her normal appearance and bearing.  It had been to
her an added terror that the black shadow of Oolanga, whom she dreaded,
would follow hard on his master.  A load was lifted from her mind when he
did not make his usual stealthy approach.  She had also feared, though in
lesser degree, lest Lady Arabella should be present to make trouble for
her as before.

With a woman's natural forethought in a difficult position, she had
provided the furnishing of the tea-table as a subtle indication of the
social difference between her and her guest.  She had chosen the
implements of service, as well as all the provender set forth, of the
humblest kind.  Instead of arranging the silver teapot and china cups,
she had set out an earthen teapot, such as was in common use in the farm
kitchen.  The same idea was carried out in the cups and saucers of thick
homely delft, and in the cream-jug of similar kind.  The bread was of
simple whole-meal, home-baked.  The butter was good, since she had made
it herself, while the preserves and honey came from her own garden.  Her
face beamed with satisfaction when the guest eyed the appointments with a
supercilious glance.  It was a shock to the poor girl herself, for she
enjoyed offering to a guest the little hospitalities possible to her; but
that had to be sacrificed with other pleasures.

Caswall's face was more set and iron-clad than ever--his piercing eyes
seemed from the very beginning to look her through and through.  Her
heart quailed when she thought of what would follow--of what would be the
end, when this was only the beginning.  As some protection, though it
could be only of a sentimental kind, she brought from her own room the
photographs of Mimi, of her grandfather, and of Adam Salton, whom by now
she had grown to look on with reliance, as a brother whom she could
trust.  She kept the pictures near her heart, to which her hand naturally
strayed when her feelings of constraint, distrust, or fear became so
poignant as to interfere with the calm which she felt was necessary to
help her through her ordeal.

At first Edgar Caswall was courteous and polite, even thoughtful; but
after a little while, when he found her resistance to his domination
grow, he abandoned all forms of self-control and appeared in the same
dominance as he had previously shown.  She was prepared, however, for
this, both by her former experience and the natural fighting instinct
within her.  By this means, as the minutes went on, both developed the
power and preserved the equality in which they had begun.

Without warning, the psychic battle between the two individualities began
afresh.  This time both the positive and negative causes were all in
favour of the man.  The woman was alone and in bad spirits, unsupported;
nothing at all was in her favour except the memory of the two victorious
contests; whereas the man, though unaided, as before, by either Lady
Arabella or Oolanga, was in full strength, well rested, and in
flourishing circumstances.  It was not, therefore, to be wondered at that
his native dominance of character had full opportunity of asserting
itself.  He began his preliminary stare with a conscious sense of power,
and, as it appeared to have immediate effect on the girl, he felt an ever-
growing conviction of ultimate victory.

After a little Lilla's resolution began to flag.  She felt that the
contest was unequal--that she was unable to put forth her best efforts.
As she was an unselfish person, she could not fight so well in her own
battle as in that of someone whom she loved and to whom she was devoted.
Edgar saw the relaxing of the muscles of face and brow, and the almost
collapse of the heavy eyelids which seemed tumbling downward in sleep.
Lilla made gallant efforts to brace her dwindling powers, but for a time
unsuccessfully.  At length there came an interruption, which seemed like
a powerful stimulant.  Through the wide window she saw Lady Arabella
enter the plain gateway of the farm, and advance towards the hall door.
She was clad as usual in tight-fitting white, which accentuated her thin,
sinuous figure.

The sight did for Lilla what no voluntary effort could have done.  Her
eyes flashed, and in an instant she felt as though a new life had
suddenly developed within her.  Lady Arabella's entry, in her usual
unconcerned, haughty, supercilious way, heightened the effect, so that
when the two stood close to each other battle was joined.  Mr. Caswall,
too, took new courage from her coming, and all his masterfulness and
power came back to him.  His looks, intensified, had more obvious effect
than had been noticeable that day.  Lilla seemed at last overcome by his
dominance.  Her face became red and pale--violently red and ghastly
pale--by rapid turns.  Her strength seemed gone.  Her knees collapsed,
and she was actually sinking on the floor, when to her surprise and joy
Mimi came into the room, running hurriedly and breathing heavily.

Lilla rushed to her, and the two clasped hands.  With that, a new sense
of power, greater than Lilla had ever seen in her, seemed to quicken her
cousin.  Her hand swept the air in front of Edgar Caswall, seeming to
drive him backward more and more by each movement, till at last he seemed
to be actually hurled through the door which Mimi's entrance had left
open, and fell at full length on the gravel path without.

Then came the final and complete collapse of Lilla, who, without a sound,
sank down on the floor.

CHAPTER XXVI--FACE TO FACE

Mimi was greatly distressed when she saw her cousin lying prone.  She had
a few times in her life seen Lilla on the verge of fainting, but never
senseless; and now she was frightened.  She threw herself on her knees
beside Lilla, and tried, by rubbing her hands and other measures commonly
known, to restore her.  But all her efforts were unavailing.  Lilla still
lay white and senseless.  In fact, each moment she looked worse; her
breast, that had been heaving with the stress, became still, and the
pallor of her face grew like marble.

At these succeeding changes Mimi's fright grew, till it altogether
mastered her.  She succeeded in controlling herself only to the extent
that she did not scream.

Lady Arabella had followed Caswall, when he had recovered sufficiently to
get up and walk--though stumblingly--in the direction of Castra Regis.
When Mimi was quite alone with Lilla and the need for effort had ceased,
she felt weak and trembled.  In her own mind, she attributed it to a
sudden change in the weather--it was momentarily becoming apparent that a
storm was coming on.

She raised Lilla's head and laid it on her warm young breast, but all in
vain.  The cold of the white features thrilled through her, and she
utterly collapsed when it was borne in on her that Lilla had passed away.

The dusk gradually deepened and the shades of evening closed in, but Mimi
did not seem to notice or to care.  She sat on the floor with her arms
round the body of the girl whom she loved.  Darker and blacker grew the
sky as the coming storm and the closing night joined forces.  Still she
sat on--alone--tearless--unable to think.  Mimi did not know how long she
sat there.  Though it seemed to her that ages had passed, it could not
have been more than half-an-hour.  She suddenly came to herself, and was
surprised to find that her grandfather had not returned.  For a while she
lay quiet, thinking of the immediate past.  Lilla's hand was still in
hers, and to her surprise it was still warm.  Somehow this helped her
consciousness, and without any special act of will she stood up.  She lit
a lamp and looked at her cousin.  There was no doubt that Lilla was dead;
but when the lamp-light fell on her eyes, they seemed to look at Mimi
with intent--with meaning.  In this state of dark isolation a new
resolution came to her, and grew and grew until it became a fixed
definite purpose.  She would face Caswall and call him to account for his
murder of Lilla--that was what she called it to herself.  She would also
take steps--she knew not what or how--to avenge the part taken by Lady
Arabella.

In this frame of mind she lit all the lamps in the room, got water and
linen from her room, and set about the decent ordering of Lilla's body.
This took some time; but when it was finished, she put on her hat and
cloak, put out the lights, and set out quietly for Castra Regis.

As Mimi drew near the Castle, she saw no lights except those in and
around the tower room.  The lights showed her that Mr. Caswall was there,
so she entered by the hall door, which as usual was open, and felt her
way in the darkness up the staircase to the lobby of the room.  The door
was ajar, and the light from within showed brilliantly through the
opening.  She saw Edgar Caswall walking restlessly to and fro in the
room, with his hands clasped behind his back.  She opened the door
without knocking, and walked right into the room.  As she entered, he
ceased walking, and stared at her in surprise.  She made no remark, no
comment, but continued the fixed look which he had seen on her entrance.

For a time silence reigned, and the two stood looking fixedly at each
other.  Mimi was the first to speak.

"You murderer!  Lilla is dead!"

"Dead!  Good God!  When did she die?"

"She died this afternoon, just after you left her."

"Are you sure?"

"Yes--and so are you--or you ought to be.  You killed her!"

"I killed her!  Be careful what you say!"

"As God sees us, it is true; and you know it.  You came to Mercy Farm on
purpose to break her--if you could.  And the accomplice of your guilt,
Lady Arabella March, came for the same purpose."

"Be careful, woman," he said hotly.  "Do not use such names in that way,
or you shall suffer for it."

"I am suffering for it--have suffered for it--shall suffer for it.  Not
for speaking the truth as I have done, but because you two, with devilish
malignity, did my darling to death.  It is you and your accomplice who
have to dread punishment, not I."

"Take care!" he said again.

"Oh, I am not afraid of you or your accomplice," she answered spiritedly.
"I am content to stand by every word I have said, every act I have done.
Moreover, I believe in God's justice.  I fear not the grinding of His
mills; if necessary I shall set the wheels in motion myself.  But you
don't care for God, or believe in Him.  Your god is your great kite,
which cows the birds of a whole district.  But be sure that His hand,
when it rises, always falls at the appointed time.  It may be that your
name is being called even at this very moment at the Great Assize.  Repent
while there is still time.  Happy you, if you may be allowed to enter
those mighty halls in the company of the pure-souled angel whose voice
has only to whisper one word of justice, and you disappear for ever into
everlasting torment."

The sudden death of Lilla caused consternation among Mimi's friends and
well-wishers.  Such a tragedy was totally unexpected, as Adam and Sir
Nathaniel had been expecting the White Worm's vengeance to fall upon
themselves.

Adam, leaving his wife free to follow her own desires with regard to
Lilla and her grandfather, busied himself with filling the well-hole with
the fine sand prepared for the purpose, taking care to have lowered at
stated intervals quantities of the store of dynamite, so as to be ready
for the final explosion.  He had under his immediate supervision a corps
of workmen, and was assisted by Sir Nathaniel, who had come over for the
purpose, and all were now staying at Lesser Hill.

Mr. Salton, too, showed much interest in the job, and was constantly
coming in and out, nothing escaping his observation.

Since her marriage to Adam and their coming to stay at Doom Tower, Mimi
had been fettered by fear of the horrible monster at Diana's Grove.  But
now she dreaded it no longer.  She accepted the fact of its assuming at
will the form of Lady Arabella.  She had still to tax and upbraid her for
her part in the unhappiness which had been wrought on Lilla, and for her
share in causing her death.

One evening, when Mimi entered her own room, she went to the window and
threw an eager look round the whole circle of sight.  A single glance
satisfied her that the White Worm in _propria persona_ was not visible.
So she sat down in the window-seat and enjoyed the pleasure of a full
view, from which she had been so long cut off.  The maid who waited on
her had told her that Mr. Salton had not yet returned home, so she felt
free to enjoy the luxury of peace and quiet.

As she looked out of the window, she saw something thin and white move
along the avenue.  She thought she recognised the figure of Lady
Arabella, and instinctively drew back behind the curtain.  When she had
ascertained, by peeping out several times, that the lady had not seen
her, she watched more carefully, all her instinctive hatred flooding back
at the sight of her.  Lady Arabella was moving swiftly and stealthily,
looking back and around her at intervals, as if she feared to be
followed.  This gave Mimi an idea that she was up to no good, so she
determined to seize the occasion for watching her in more detail.

Hastily putting on a dark cloak and hat, she ran downstairs and out into
the avenue.  Lady Arabella had moved, but the sheen of her white dress
was still to be seen among the young oaks around the gateway.  Keeping in
shadow, Mimi followed, taking care not to come so close as to awake the
other's suspicion, and watched her quarry pass along the road in the
direction of Castra Regis.

She followed on steadily through the gloom of the trees, depending on the
glint of the white dress to keep her right.  The wood began to thicken,
and presently, when the road widened and the trees grew farther back, she
lost sight of any indication of her whereabouts.  Under the present
conditions it was impossible for her to do any more, so, after waiting
for a while, still hidden in the shadow to see if she could catch another
glimpse of the white frock, she determined to go on slowly towards Castra
Regis, and trust to the chapter of accidents to pick up the trail again.
She went on slowly, taking advantage of every obstacle and shadow to keep
herself concealed.

At last she entered on the grounds of the Castle, at a spot from which
the windows of the turret were dimly visible, without having seen again
any sign of Lady Arabella.

Meanwhile, during most of the time that Mimi Salton had been moving
warily along in the gloom, she was in reality being followed by Lady
Arabella, who had caught sight of her leaving the house and had never
again lost touch with her.  It was a case of the hunter being hunted.  For
a time Mimi's many turnings, with the natural obstacles that were
perpetually intervening, caused Lady Arabella some trouble; but when she
was close to Castra Regis, there was no more possibility of concealment,
and the strange double following went swiftly on.

When she saw Mimi close to the hall door of Castra Regis and ascending
the steps, she followed.  When Mimi entered the dark hall and felt her
way up the staircase, still, as she believed, following Lady Arabella,
the latter kept on her way.  When they reached the lobby of the turret-
rooms, Mimi believed that the object of her search was ahead of her.

Edgar Caswall sat in the gloom of the great room, occasionally stirred to
curiosity when the drifting clouds allowed a little light to fall from
the storm-swept sky.  But nothing really interested him now.  Since he
had heard of Lilla's death, the gloom of his remorse, emphasised by
Mimi's upbraiding, had made more hopeless his cruel, selfish, saturnine
nature.  He heard no sound, for his normal faculties seemed benumbed.

Mimi, when she came to the door, which stood ajar, gave a light tap.  So
light was it that it did not reach Caswall's ears.  Then, taking her
courage in both hands, she boldly pushed the door and entered.  As she
did so, her heart sank, for now she was face to face with a difficulty
which had not, in her state of mental perturbation, occurred to her.

CHAPTER XXVII--ON THE TURRET ROOF

The storm which was coming was already making itself manifest, not only
in the wide scope of nature, but in the hearts and natures of human
beings.  Electrical disturbance in the sky and the air is reproduced in
animals of all kinds, and particularly in the highest type of them
all--the most receptive--the most electrical.  So it was with Edgar
Caswall, despite his selfish nature and coldness of blood.  So it was
with Mimi Salton, despite her unselfish, unchanging devotion for those
she loved.  So it was even with Lady Arabella, who, under the instincts
of a primeval serpent, carried the ever-varying wishes and customs of
womanhood, which is always old--and always new.

Edgar, after he had turned his eyes on Mimi, resumed his apathetic
position and sullen silence.  Mimi quietly took a seat a little way
apart, whence she could look on the progress of the coming storm and
study its appearance throughout the whole visible circle of the
neighbourhood.  She was in brighter and better spirits than she had been
for many days past.  Lady Arabella tried to efface herself behind the now
open door.

Without, the clouds grew thicker and blacker as the storm-centre came
closer.  As yet the forces, from whose linking the lightning springs,
were held apart, and the silence of nature proclaimed the calm before the
storm.  Caswall felt the effect of the gathering electric force.  A sort
of wild exultation grew upon him, such as he had sometimes felt just
before the breaking of a tropical storm.  As he became conscious of this,
he raised his head and caught sight of Mimi.  He was in the grip of an
emotion greater than himself; in the mood in which he was he felt the
need upon him of doing some desperate deed.  He was now absolutely
reckless, and as Mimi was associated with him in the memory which drove
him on, he wished that she too should be engaged in this enterprise.  He
had no knowledge of the proximity of Lady Arabella, and thought that he
was far removed from all he knew and whose interests he shared--alone
with the wild elements, which were being lashed to fury, and with the
woman who had struggled with him and vanquished him, and on whom he would
shower the full measure of his hate.

The fact was that Edgar Caswall was, if not mad, close to the
border-line.  Madness in its first stage--monomania--is a lack of
proportion.  So long as this is general, it is not always noticeable, for
the uninspired onlooker is without the necessary means of comparison.  But
in monomania the errant faculty protrudes itself in a way that may not be
denied.  It puts aside, obscures, or takes the place of something
else--just as the head of a pin placed before the centre of the iris will
block out the whole scope of vision.  The most usual form of monomania
has commonly the same beginning as that from which Edgar Caswall
suffered--an over-large idea of self-importance.  Alienists, who study
the matter exactly, probably know more of human vanity and its effects
than do ordinary men.  Caswall's mental disturbance was not hard to
identify.  Every asylum is full of such cases--men and women, who,
naturally selfish and egotistical, so appraise to themselves their own
importance that every other circumstance in life becomes subservient to
it.  The disease supplies in itself the material for self-magnification.
When the decadence attacks a nature naturally proud and selfish and vain,
and lacking both the aptitude and habit of self-restraint, the
development of the disease is more swift, and ranges to farther limits.
It is such persons who become imbued with the idea that they have the
attributes of the Almighty--even that they themselves are the Almighty.

Mimi had a suspicion--or rather, perhaps, an intuition--of the true state
of things when she heard him speak, and at the same time noticed the
abnormal flush on his face, and his rolling eyes.  There was a certain
want of fixedness of purpose which she had certainly not noticed before--a
quick, spasmodic utterance which belongs rather to the insane than to
those of intellectual equilibrium.  She was a little frightened, not only
by his thoughts, but by his staccato way of expressing them.

Caswall moved to the door leading to the turret stair by which the roof
was reached, and spoke in a peremptory way, whose tone alone made her
feel defiant.

"Come!  I want you."

She instinctively drew back--she was not accustomed to such words, more
especially to such a tone.  Her answer was indicative of a new contest.

"Why should I go?  What for?"

He did not at once reply--another indication of his overwhelming egotism.
She repeated her questions; habit reasserted itself, and he spoke without
thinking the words which were in his heart.

"I want you, if you will be so good, to come with me to the turret roof.
I am much interested in certain experiments with the kite, which would
be, if not a pleasure, at least a novel experience to you.  You would see
something not easily seen otherwise."

"I will come," she answered simply; Edgar moved in the direction of the
stair, she following close behind him.

She did not like to be left alone at such a height, in such a place, in
the darkness, with a storm about to break.  Of himself she had no fear;
all that had been seemed to have passed away with her two victories over
him in the struggle of wills.  Moreover, the more recent
apprehension--that of his madness--had also ceased.  In the conversation
of the last few minutes he seemed so rational, so clear, so unaggressive,
that she no longer saw reason for doubt.  So satisfied was she that even
when he put out a hand to guide her to the steep, narrow stairway, she
took it without thought in the most conventional way.

Lady Arabella, crouching in the lobby behind the door, heard every word
that had been said, and formed her own opinion of it.  It seemed evident
to her that there had been some rapprochement between the two who had so
lately been hostile to each other, and that made her furiously angry.
Mimi was interfering with her plans!  She had made certain of her capture
of Edgar Caswall, and she could not tolerate even the lightest and most
contemptuous fancy on his part which might divert him from the main
issue.  When she became aware that he wished Mimi to come with him to the
roof and that she had acquiesced, her rage got beyond bounds.  She became
oblivious to any danger there might be in a visit to such an exposed
place at such a time, and to all lesser considerations, and made up her
mind to forestall them.  She stealthily and noiselessly crept through the
wicket, and, ascending the stair, stepped out on the roof.  It was
bitterly cold, for the fierce gusts of the storm which swept round the
turret drove in through every unimpeded way, whistling at the sharp
corners and singing round the trembling flagstaff.  The kite-string and
the wire which controlled the runners made a concourse of weird sounds
which somehow, perhaps from the violence which surrounded them, acting on
their length, resolved themselves into some kind of harmony--a fitting
accompaniment to the tragedy which seemed about to begin.

Mimi's heart beat heavily.  Just before leaving the turret-chamber she
had a shock which she could not shake off.  The lights of the room had
momentarily revealed to her, as they passed out, Edgar's face,
concentrated as it was whenever he intended to use his mesmeric power.
Now the black eyebrows made a thick line across his face, under which his
eyes shone and glittered ominously.  Mimi recognised the danger, and
assumed the defiant attitude that had twice already served her so well.
She had a fear that the circumstances and the place were against her, and
she wanted to be forearmed.

The sky was now somewhat lighter than it had been.  Either there was
lightning afar off, whose reflections were carried by the rolling clouds,
or else the gathered force, though not yet breaking into lightning, had
an incipient power of light.  It seemed to affect both the man and the
woman.  Edgar seemed altogether under its influence.  His spirits were
boisterous, his mind exalted.  He was now at his worst; madder than he
had been earlier in the night.

Mimi, trying to keep as far from him as possible, moved across the stone
floor of the turret roof, and found a niche which concealed her.  It was
not far from Lady Arabella's place of hiding.

Edgar, left thus alone on the centre of the turret roof, found himself
altogether his own master in a way which tended to increase his madness.
He knew that Mimi was close at hand, though he had lost sight of her.  He
spoke loudly, and the sound of his own voice, though it was carried from
him on the sweeping wind as fast as the words were spoken, seemed to
exalt him still more.  Even the raging of the elements round him appeared
to add to his exaltation.  To him it seemed that these manifestations
were obedient to his own will.  He had reached the sublime of his
madness; he was now in his own mind actually the Almighty, and whatever
might happen would be the direct carrying out of his own commands.  As he
could not see Mimi, nor fix whereabout she was, he shouted loudly:

"Come to me!  You shall see now what you are despising, what you are
warring against.  All that you see is mine--the darkness as well as the
light.  I tell you that I am greater than any other who is, or was, or
shall be.  When the Master of Evil took Christ up on a high place and
showed Him all the kingdoms of the earth, he was doing what he thought no
other could do.  He was wrong--he forgot _Me_.  I shall send you light,
up to the very ramparts of heaven.  A light so great that it shall
dissipate those black clouds that are rushing up and piling around us.
Look!  Look!  At the very touch of my hand that light springs into being
and mounts up--and up--and up!"

He made his way whilst he was speaking to the corner of the turret whence
flew the giant kite, and from which the runners ascended.  Mimi looked
on, appalled and afraid to speak lest she should precipitate some
calamity.  Within the niche Lady Arabella cowered in a paroxysm of fear.

Edgar took up a small wooden box, through a hole in which the wire of the
runner ran.  This evidently set some machinery in motion, for a sound as
of whirring came.  From one side of the box floated what looked like a
piece of stiff ribbon, which snapped and crackled as the wind took it.
For a few seconds Mimi saw it as it rushed along the sagging line to the
kite.  When close to it, there was a loud crack, and a sudden light
appeared to issue from every chink in the box.  Then a quick flame
flashed along the snapping ribbon, which glowed with an intense light--a
light so great that the whole of the countryside around stood out against
the background of black driving clouds.  For a few seconds the light
remained, then suddenly disappeared in the blackness around.  It was
simply a magnesium light, which had been fired by the mechanism within
the box and carried up to the kite.  Edgar was in a state of tumultuous
excitement, shouting and yelling at the top of his voice and dancing
about like a lunatic.

This was more than Lady Arabella's curious dual nature could stand--the
ghoulish element in her rose triumphant, and she abandoned all idea of
marriage with Edgar Caswall, gloating fiendishly over the thought of
revenge.

She must lure him to the White Worm's hole--but how?  She glanced around
and quickly made up her mind.  The man's whole thoughts were absorbed by
his wonderful kite, which he was showing off, in order to fascinate her
imaginary rival, Mimi.

On the instant she glided through the darkness to the wheel whereon the
string of the kite was wound.  With deft fingers she unshipped this, took
it with her, reeling out the wire as she went, thus keeping, in a way, in
touch with the kite.  Then she glided swiftly to the wicket, through
which she passed, locking the gate behind her as she went.

Down the turret stair she ran quickly, letting the wire run from the
wheel which she carried carefully, and, passing out of the hall door,
hurried down the avenue with all her speed.  She soon reached her own
gate, ran down the avenue, and with her key opened the iron door leading
to the well-hole.

She felt well satisfied with herself.  All her plans were maturing, or
had already matured.  The Master of Castra Regis was within her grasp.
The woman whose interference she had feared, Lilla Watford, was dead.
Truly, all was well, and she felt that she might pause a while and rest.
She tore off her clothes, with feverish fingers, and in full enjoyment of
her natural freedom, stretched her slim figure in animal delight.  Then
she lay down on the sofa--to await her victim!  Edgar Caswall's life
blood would more than satisfy her for some time to come.

CHAPTER XXVIII--THE BREAKING OF THE STORM

When Lady Arabella had crept away in her usual noiseless fashion, the two
others remained for a while in their places on the turret roof: Caswall
because he had nothing to say, Mimi because she had much to say and
wished to put her thoughts in order.  For quite a while--which seemed
interminable--silence reigned between them.  At last Mimi made a
beginning--she had made up her mind how to act.

"Mr. Caswall," she said loudly, so as to make sure of being heard through
the blustering of the wind and the perpetual cracking of the electricity.

Caswall said something in reply, but his words were carried away on the
storm.  However, one of her objects was effected: she knew now exactly
whereabout on the roof he was.  So she moved close to the spot before she
spoke again, raising her voice almost to a shout.

"The wicket is shut.  Please to open it.  I can't get out."

As she spoke, she was quietly fingering a revolver which Adam had given
to her in case of emergency and which now lay in her breast.  She felt
that she was caged like a rat in a trap, but did not mean to be taken at
a disadvantage, whatever happened.  Caswall also felt trapped, and all
the brute in him rose to the emergency.  In a voice which was raucous and
brutal--much like that which is heard when a wife is being beaten by her
husband in a slum--he hissed out, his syllables cutting through the
roaring of the storm:

"You came of your own accord--without permission, or even asking it.  Now
you can stay or go as you choose.  But you must manage it for yourself;
I'll have nothing to do with it."

Her answer was spoken with dangerous suavity

"I am going.  Blame yourself if you do not like the time and manner of
it.  I daresay Adam--my husband--will have a word to say to you about
it!"

"Let him say, and be damned to him, and to you too!  I'll show you a
light.  You shan't be able to say that you could not see what you were
doing."

As he spoke, he was lighting another piece of the magnesium ribbon, which
made a blinding glare in which everything was plainly discernible, down
to the smallest detail.  This exactly suited Mimi.  She took accurate
note of the wicket and its fastening before the glare had died away.  She
took her revolver out and fired into the lock, which was shivered on the
instant, the pieces flying round in all directions, but happily without
causing hurt to anyone.  Then she pushed the wicket open and ran down the
narrow stair, and so to the hall door.  Opening this also, she ran down
the avenue, never lessening her speed till she stood outside the door of
Lesser Hill.  The door was opened at once on her ringing.

"Is Mr. Adam Salton in?" she asked.

"He has just come in, a few minutes ago.  He has gone up to the study,"
replied a servant.

She ran upstairs at once and joined him.  He seemed relieved when he saw
her, but scrutinised her face keenly.  He saw that she had been in some
concern, so led her over to the sofa in the window and sat down beside
her.

"Now, dear, tell me all about it!" he said.

She rushed breathlessly through all the details of her adventure on the
turret roof.  Adam listened attentively, helping her all he could, and
not embarrassing her by any questioning.  His thoughtful silence was a
great help to her, for it allowed her to collect and organise her
thoughts.

"I must go and see Caswall to-morrow, to hear what he has to say on the
subject."

"But, dear, for my sake, don't have any quarrel with Mr. Caswall.  I have
had too much trial and pain lately to wish it increased by any anxiety
regarding you."

"You shall not, dear--if I can help it--please God," he said solemnly,
and he kissed her.

Then, in order to keep her interested so that she might forget the fears
and anxieties that had disturbed her, he began to talk over the details
of her adventure, making shrewd comments which attracted and held her
attention.  Presently, _inter alia_, he said:

"That's a dangerous game Caswall is up to.  It seems to me that that
young man--though he doesn't appear to know it--is riding for a fall!"

"How, dear?  I don't understand."

"Kite flying on a night like this from a place like the tower of Castra
Regis is, to say the least of it, dangerous.  It is not merely courting
death or other accident from lightning, but it is bringing the lightning
into where he lives.  Every cloud that is blowing up here--and they all
make for the highest point--is bound to develop into a flash of
lightning.  That kite is up in the air and is bound to attract the
lightning.  Its cord makes a road for it on which to travel to earth.
When it does come, it will strike the top of the tower with a weight a
hundred times greater than a whole park of artillery, and will knock
Castra Regis into pieces.  Where it will go after that, no one can tell.
If there should be any metal by which it can travel, such will not only
point the road, but be the road itself."

"Would it be dangerous to be out in the open air when such a thing is
taking place?" she asked.

"No, little woman.  It would be the safest possible place--so long as one
was not in the line of the electric current."

"Then, do let us go outside.  I don't want to run into any foolish
danger--or, far more, to ask you to do so.  But surely if the open is
safest, that is the place for us."

Without another word, she put on again the cloak she had thrown off, and
a small, tight-fitting cap.  Adam too put on his cap, and, after seeing
that his revolver was all right, gave her his hand, and they left the
house together.

"I think the best thing we can do will be to go round all the places
which are mixed up in this affair."

"All right, dear, I am ready.  But, if you don't mind, we might go first
to Mercy.  I am anxious about grandfather, and we might see that--as yet,
at all events--nothing has happened there."

So they went on the high-hung road along the top of the Brow.  The wind
here was of great force, and made a strange booming noise as it swept
high overhead; though not the sound of cracking and tearing as it passed
through the woods of high slender trees which grew on either side of the
road.  Mimi could hardly keep her feet.  She was not afraid; but the
force to which she was opposed gave her a good excuse to hold on to her
husband extra tight.

At Mercy there was no one up--at least, all the lights were out.  But to
Mimi, accustomed to the nightly routine of the house, there were manifest
signs that all was well, except in the little room on the first floor,
where the blinds were down.  Mimi could not bear to look at that, to
think of it.  Adam understood her pain, for he had been keenly interested
in poor Lilla.  He bent over and kissed her, and then took her hand and
held it hard.  Thus they passed on together, returning to the high road
towards Castra Regis.

At the gate of Castra Regis they were extra careful.  When drawing near,
Adam stumbled upon the wire that Lady Arabella had left trailing on the
ground.

Adam drew his breath at this, and spoke in a low, earnest whisper:

"I don't want to frighten you, Mimi dear, but wherever that wire is there
is danger."

"Danger!  How?"

"That is the track where the lightning will go; at any moment, even now
whilst we are speaking and searching, a fearful force may be loosed upon
us.  Run on, dear; you know the way to where the avenue joins the
highroad.  If you see any sign of the wire, keep away from it, for God's
sake.  I shall join you at the gateway."

"Are you going to follow that wire alone?"

"Yes, dear.  One is sufficient for that work.  I shall not lose a moment
till I am with you."

"Adam, when I came with you into the open, my main wish was that we
should be together if anything serious happened.  You wouldn't deny me
that right, would you, dear?"

"No, dear, not that or any right.  Thank God that my wife has such a
wish.  Come; we will go together.  We are in the hands of God.  If He
wishes, we shall be together at the end, whenever or wherever that may
be."

They picked up the trail of the wire on the steps and followed it down
the avenue, taking care not to touch it with their feet.  It was easy
enough to follow, for the wire, if not bright, was self-coloured, and
showed clearly.  They followed it out of the gateway and into the avenue
of Diana's Grove.

Here a new gravity clouded Adam's face, though Mimi saw no cause for
fresh concern.  This was easily enough explained.  Adam knew of the
explosive works in progress regarding the well-hole, but the matter had
been kept from his wife.  As they stood near the house, Adam asked Mimi
to return to the road, ostensibly to watch the course of the wire,
telling her that there might be a branch wire leading somewhere else.  She
was to search the undergrowth, and if she found it, was to warn him by
the Australian native "Coo-ee!"

Whilst they were standing together, there came a blinding flash of
lightning, which lit up for several seconds the whole area of earth and
sky.  It was only the first note of the celestial prelude, for it was
followed in quick succession by numerous flashes, whilst the crash and
roll of thunder seemed continuous.

Adam, appalled, drew his wife to him and held her close.  As far as he
could estimate by the interval between lightning and thunder-clap, the
heart of the storm was still some distance off, so he felt no present
concern for their safety.  Still, it was apparent that the course of the
storm was moving swiftly in their direction.  The lightning flashes came
faster and faster and closer together; the thunder-roll was almost
continuous, not stopping for a moment--a new crash beginning before the
old one had ceased.  Adam kept looking up in the direction where the kite
strained and struggled at its detaining cord, but, of course, the dull
evening light prevented any distinct scrutiny.

At length there came a flash so appallingly bright that in its glare
Nature seemed to be standing still.  So long did it last, that there was
time to distinguish its configuration.  It seemed like a mighty tree
inverted, pendent from the sky.  The whole country around within the
angle of vision was lit up till it seemed to glow.  Then a broad ribbon
of fire seemed to drop on to the tower of Castra Regis just as the
thunder crashed.  By the glare, Adam could see the tower shake and
tremble, and finally fall to pieces like a house of cards.  The passing
of the lightning left the sky again dark, but a blue flame fell downward
from the tower, and, with inconceivable rapidity, running along the
ground in the direction of Diana's Grove, reached the dark silent house,
which in the instant burst into flame at a hundred different points.

At the same moment there rose from the house a rending, crashing sound of
woodwork, broken or thrown about, mixed with a quick scream so appalling
that Adam, stout of heart as he undoubtedly was, felt his blood turn into
ice.  Instinctively, despite the danger and their consciousness of it,
husband and wife took hands and listened, trembling.  Something was going
on close to them, mysterious, terrible, deadly!  The shrieks continued,
though less sharp in sound, as though muffled.  In the midst of them was
a terrific explosion, seemingly from deep in the earth.

The flames from Castra Regis and from Diana's Grove made all around
almost as light as day, and now that the lightning had ceased to flash,
their eyes, unblinded, were able to judge both perspective and detail.
The heat of the burning house caused the iron doors to warp and collapse.
Seemingly of their own accord, they fell open, and exposed the interior.
The Saltons could now look through to the room beyond, where the well-
hole yawned, a deep narrow circular chasm.  From this the agonised
shrieks were rising, growing ever more terrible with each second that
passed.

But it was not only the heart-rending sound that almost paralysed poor
Mimi with terror.  What she saw was sufficient to fill her with evil
dreams for the remainder of her life.  The whole place looked as if a sea
of blood had been beating against it.  Each of the explosions from below
had thrown out from the well-hole, as if it had been the mouth of a
cannon, a mass of fine sand mixed with blood, and a horrible repulsive
slime in which were great red masses of rent and torn flesh and fat.  As
the explosions kept on, more and more of this repulsive mass was shot up,
the great bulk of it falling back again.  Many of the awful fragments
were of something which had lately been alive.  They quivered and
trembled and writhed as though they were still in torment, a supposition
to which the unending scream gave a horrible credence.  At moments some
mountainous mass of flesh surged up through the narrow orifice, as though
forced by a measureless power through an opening infinitely smaller than
itself.  Some of these fragments were partially covered with white skin
as of a human being, and others--the largest and most numerous--with
scaled skin as of a gigantic lizard or serpent.  Once, in a sort of lull
or pause, the seething contents of the hole rose, after the manner of a
bubbling spring, and Adam saw part of the thin form of Lady Arabella,
forced up to the top amid a mass of blood and slime, and what looked as
if it had been the entrails of a monster torn into shreds.  Several times
some masses of enormous bulk were forced up through the well-hole with
inconceivable violence, and, suddenly expanding as they came into larger
space, disclosed sections of the White Worm which Adam and Sir Nathaniel
had seen looking over the trees with its enormous eyes of emerald-green
flickering like great lamps in a gale.

At last the explosive power, which was not yet exhausted, evidently
reached the main store of dynamite which had been lowered into the worm
hole.  The result was appalling.  The ground for far around quivered and
opened in long deep chasms, whose edges shook and fell in, throwing up
clouds of sand which fell back and hissed amongst the rising water.  The
heavily built house shook to its foundations.  Great stones were thrown
up as from a volcano, some of them, great masses of hard stone, squared
and grooved with implements wrought by human hands, breaking up and
splitting in mid air as though riven by some infernal power.  Trees near
the house--and therefore presumably in some way above the hole, which
sent up clouds of dust and steam and fine sand mingled, and which carried
an appalling stench which sickened the spectators--were torn up by the
roots and hurled into the air.  By now, flames were bursting violently
from all over the ruins, so dangerously that Adam caught up his wife in
his arms, and ran with her from the proximity of the flames.

Then almost as quickly as it had begun, the whole cataclysm ceased,
though a deep-down rumbling continued intermittently for some time.  Then
silence brooded over all--silence so complete that it seemed in itself a
sentient thing--silence which seemed like incarnate darkness, and
conveyed the same idea to all who came within its radius.  To the young
people who had suffered the long horror of that awful night, it brought
relief--relief from the presence or the fear of all that was
horrible--relief which seemed perfected when the red rays of sunrise shot
up over the far eastern sea, bringing a promise of a new order of things
with the coming day.

His bed saw little of Adam Salton for the remainder of that night.  He
and Mimi walked hand in hand in the brightening dawn round by the Brow to
Castra Regis and on to Lesser Hill.  They did so deliberately, in an
attempt to think as little as possible of the terrible experiences of the
night.  The morning was bright and cheerful, as a morning sometimes is
after a devastating storm.  The clouds, of which there were plenty in
evidence, brought no lingering idea of gloom.  All nature was bright and
joyous, being in striking contrast to the scenes of wreck and
devastation, the effects of obliterating fire and lasting ruin.

The only evidence of the once stately pile of Castra Regis and its
inhabitants was a shapeless huddle of shattered architecture, dimly seen
as the keen breeze swept aside the cloud of acrid smoke which marked the
site of the once lordly castle.  As for Diana's Grove, they looked in
vain for a sign which had a suggestion of permanence.  The oak trees of
the Grove were still to be seen--some of them--emerging from a haze of
smoke, the great trunks solid and erect as ever, but the larger branches
broken and twisted and rent, with bark stripped and chipped, and the
smaller branches broken and dishevelled looking from the constant stress
and threshing of the storm.

Of the house as such, there was, even at the short distance from which
they looked, no trace.  Adam resolutely turned his back on the
devastation and hurried on.  Mimi was not only upset and shocked in many
ways, but she was physically "dog tired," and falling asleep on her feet.
Adam took her to her room and made her undress and get into bed, taking
care that the room was well lighted both by sunshine and lamps.  The only
obstruction was from a silk curtain, drawn across the window to keep out
the glare.  He sat beside her, holding her hand, well knowing that the
comfort of his presence was the best restorative for her.  He stayed with
her till sleep had overmastered her wearied body.  Then he went softly
away.  He found his uncle and Sir Nathaniel in the study, having an early
cup of tea, amplified to the dimensions of a possible breakfast.  Adam
explained that he had not told his wife that he was going over the
horrible places again, lest it should frighten her, for the rest and
sleep in ignorance would help her and make a gap of peacefulness between
the horrors.

Sir Nathaniel agreed.

"We know, my boy," he said, "that the unfortunate Lady Arabella is dead,
and that the foul carcase of the Worm has been torn to pieces--pray God
that its evil soul will never more escape from the nethermost hell."

They visited Diana's Grove first, not only because it was nearer, but
also because it was the place where most description was required, and
Adam felt that he could tell his story best on the spot.  The absolute
destruction of the place and everything in it seen in the broad daylight
was almost inconceivable.  To Sir Nathaniel, it was as a story of horror
full and complete.  But to Adam it was, as it were, only on the fringes.
He knew what was still to be seen when his friends had got over the
knowledge of externals.  As yet, they had only seen the outside of the
house--or rather, where the outside of the house once had been.  The
great horror lay within.  However, age--and the experience of age--counts.

A strange, almost elemental, change in the aspect had taken place in the
time which had elapsed since the dawn.  It would almost seem as if Nature
herself had tried to obliterate the evil signs of what had occurred.
True, the utter ruin of the house was made even more manifest in the
searching daylight; but the more appalling destruction which lay beneath
was not visible.  The rent, torn, and dislocated stonework looked worse
than before; the upheaved foundations, the piled-up fragments of masonry,
the fissures in the torn earth--all were at the worst.  The Worm's hole
was still evident, a round fissure seemingly leading down into the very
bowels of the earth.  But all the horrid mass of blood and slime, of
torn, evil-smelling flesh and the sickening remnants of violent death,
were gone.  Either some of the later explosions had thrown up from the
deep quantities of water which, though foul and corrupt itself, had still
some cleansing power left, or else the writhing mass which stirred from
far below had helped to drag down and obliterate the items of horror.  A
grey dust, partly of fine sand, partly of the waste of the falling ruin,
covered everything, and, though ghastly itself, helped to mask something
still worse.

After a few minutes of watching, it became apparent to the three men that
the turmoil far below had not yet ceased.  At short irregular intervals
the hell-broth in the hole seemed as if boiling up.  It rose and fell
again and turned over, showing in fresh form much of the nauseous detail
which had been visible earlier.  The worst parts were the great masses of
the flesh of the monstrous Worm, in all its red and sickening aspect.
Such fragments had been bad enough before, but now they were infinitely
worse.  Corruption comes with startling rapidity to beings whose
destruction has been due wholly or in part to lightning--the whole mass
seemed to have become all at once corrupt!  The whole surface of the
fragments, once alive, was covered with insects, worms, and vermin of all
kinds.  The sight was horrible enough, but, with the awful smell added,
was simply unbearable.  The Worm's hole appeared to breathe forth death
in its most repulsive forms.  The friends, with one impulse, moved to the
top of the Brow, where a fresh breeze from the sea was blowing up.

At the top of the Brow, beneath them as they looked down, they saw a
shining mass of white, which looked strangely out of place amongst such
wreckage as they had been viewing.  It appeared so strange that Adam
suggested trying to find a way down, so that they might see it more
closely.

"We need not go down; I know what it is," Sir Nathaniel said.  "The
explosions of last night have blown off the outside of the cliffs--that
which we see is the vast bed of china clay through which the Worm
originally found its way down to its lair.  I can catch the glint of the
water of the deep quags far down below.  Well, her ladyship didn't
deserve such a funeral--or such a monument."

The horrors of the last few hours had played such havoc with Mimi's
nerves, that a change of scene was imperative--if a permanent breakdown
was to be avoided.

"I think," said old Mr. Salton, "it is quite time you young people
departed for that honeymoon of yours!"  There was a twinkle in his eye as
he spoke.

Mimi's soft shy glance at her stalwart husband, was sufficient answer.