<h2 id="XIX">CHAPTER XIX. <br/> <small>A FIENDISH PLOT.</small></h2>
<p>The two skulkers soon disappeared, having drawn
too close to the nearer wall for Nick Carter to see
them. He put his ear close to the opening, however,
and listened.</p>
<p>He was enabled to hear the ladder placed against
the fire escape, faint though the sound was, and to
check off the men’s movements as they climbed upward.
When they approached the second floor, he
quietly slipped out of his chair and retreated into the
shadows in the middle of the room. He did not
care to be seen at the window, even though his identity
was so well cloaked.</p>
<p>Apparently no word was exchanged on the part of
the two climbers. They were running a considerable
risk, and they doubtless knew it. There was quite
enough light for them to be seen if any one should
look out of one of the many windows which opened
on the court. Fortunately for them, however, they
did not have far to go, and were not obliged to pass
a single bedroom.</p>
<p>They made their way upward with a great deal
of care, but Nick could plainly hear the faint scrape
of their shoes on the metal steps.</p>
<p>It was obvious that they had already settled all the
details.</p>
<p>“They have everything cut and dried,” the detective<span class="pagenum"><SPAN name="Page_95" id="Page_95">[95]</SPAN></span>
told himself, his keen eyes glinting in the shadows,
“and men of their type do not go to such deliberate
pains for nothing.”</p>
<p>After that the sounds told the detective that the
first man, probably Stone himself, had reached the
landing just to the right of his window, and almost
immediately afterward he caught the faint noise made
as the sash was raised.</p>
<p>There was a little more rustling and scraping, then
silence. The detective concluded that it was safe
enough to return to his point of vantage outside.
Just as he did so, he saw the lower sash of Stone’s
window being pulled down.</p>
<p>“I hope they leave that wedge in place,” he murmured.</p>
<p>The light flashed up, and the shade was drawn
down—by Doctor Follansbee, as the shadow showed.</p>
<p>There was no way of telling, however, whether the
wedge had been removed or not. Follansbee had
doubtless been the last to pass through, and probably
did not know of its existence; and then it might have
been dislodged by the passage of one or the other of
them.</p>
<p>It was time for the watcher to become the man of
action, and the transformation entailed considerable
risk, as the detective knew. He did not mean to remain
in idleness where he was; but, on the contrary,
had determined to repeat his maneuver of some time
before. In other words, he meant to crawl out on the
fire escape once more and take a position outside of
the miner’s window, in the hope that he could hear<span class="pagenum"><SPAN name="Page_96" id="Page_96">[96]</SPAN></span>
enough of the conversation between the two to enable
him to get a clew to their intentions, if not with
regard to Winthrop Crawford.</p>
<p>The sounds they had made with all their care had
brought his danger home to him, and he realized that
the necessity for climbing over the iron railing made
it likely that he would cause even more noise. The
attempt must be made, though, come what might, and
Nick had already made preparations for it. He had
anticipated the necessity, and had previously transferred
a little instrument from one of his suit cases
to his pocket.</p>
<p>It was a sort of disc made of hard rubber for the
most part, and about an inch in thickness. Its use
was obscure at first glance, but would have been sufficiently
plain upon examination. It was a sort of
ear trumpet designed for the deaf, but without the
old-fashioned horn attachment.</p>
<p>He buttoned his coat once more about him, then
proceeded to raise his window the required distance;
but at the risk of missing something important, he
took his time about it, with the result that the slight
sound could not have been heard even a few feet
away. When there was room enough for him to
crawl through, he did so, and, leaning over, grasped
the end of the platform. He stepped noiselessly
across the gap, threw one leg over the railing and
gently lowered himself to the grating. Along this
he tiptoed, his thin-soled shoes making practically no
sound as he advanced. In a few moments he was
kneeling in front of Stone’s window with the rubber<span class="pagenum"><SPAN name="Page_97" id="Page_97">[97]</SPAN></span>
disc held to his right ear, and his ear lowered to the
crack at the bottom of the sash.</p>
<p>The wooden wedge was still in place, luckily for
him, consequently the sash had remained slightly
raised. As soon as the device was brought into use,
it amplified the sounds it caught, and what had been
an indistinct murmur of voices became an easily
audible conversation.</p>
<p>“Be very careful of this,” were the first definite
words he heard. They were in Doctor Follansbee’s
voice. “I will leave it in the case here for you,” the
high, thin tones went on. “Don’t press the plunger
until you have inserted the needle underneath the skin.
Is that clear?”</p>
<p>“Yes.”</p>
<p>The detective hardly recognized Stone’s voice, so
hoarse and agitated did it sound.</p>
<p>“The drug and sponge will be easy for you to
handle,” Follansbee explained. “Wait until you get
into the room and are six feet or so from the bed,
then just sprinkle a few drops on the sponge from
this vial.”</p>
<p>“Won’t he smell the stuff and wake up?”</p>
<p>“Certainly not, unless you make a noise. The drug
has a penetrating odor, of course, for the time being,
but his sleeping sense won’t convey a message of warning
soon enough to spoil your plans. If the odor
reaches his nostrils before you’re ready to act, and
he’s really asleep, it will probably only cause a momentary
dream of some sort; an attempt of the subconscious
self to explain the situation.”</p>
<p><span class="pagenum"><SPAN name="Page_98" id="Page_98">[98]</SPAN></span></p>
<p>“All right, but—but won’t they be able to tell that
he’s been drugged?”</p>
<p>Nick heard a thin, piping laugh. “You must think
me a fool,” Follansbee’s voice returned. “The keenest
scent would be incapable of detecting any odor in
the room five minutes after that drug is used, and it
leaves little or no after effects. Crawford will wake
up to-morrow morning without the slightest suspicion
that anything has happened to him, and he’ll feel perfectly
normal.”</p>
<p>“And what about the—the other?”</p>
<p>“It will not begin to show itself until Monday or
Tuesday,” was the confident answer. “And even then
the symptoms will be inconclusive. There aren’t half
a dozen physicians who would know what they meant
in any of the early stages, and by the time any one
could authoritatively diagnose the case, the patient
would be beyond help. In fact, he’ll be beyond it for
all ordinary purposes from the time the serum is introduced
into his system, and before the twenty-seventh
he’ll be dead.”</p>
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