Again Jimmie Dale checked that nervous, unnatural inclination to laugh aloud. Was there anything, any single incident, any single detail of all that had transpired, that was not explained, borne out, as it could be explained and borne out in no other way save that the Crime Club should be no other than this very house itself? It was the exposition of that favourite theory of his—it was so obvious that therein lay its security. He had mocked at the Magpie not many moments before on that score—and now it was the beam in his own eye! It was so obvious now, so glaringly obvious, that the Crime Club could have been nowhere else; so obvious, with every word of the Tocsin's story pointing it out like a signpost—and he had not seen it!
And then suddenly every muscle grew strained and rigid. Was there some one in the corridor? Was it some one moving—or was it only fancy? He listened—while he strained his eyes through the darkness. There was no sound; only that abnormal, heavy silence that—yes, he remembered that, too, now—that had clung about him last night like a pall. He could see nothing, hear nothing—but intuitively, bringing a cold dismay, the greater because it was something unknown, intangible, he felt as though eyes were upon him, that even in the darkness he was being watched!
And as he stood there, then, slowly there crept upon Jimmie Dale the sense of peril and disaster. It was not intuition now—it was certainty. He was trapped! It was the part of a fool to imagine that with their devil's cunning, their cleverness, their ingenuity, he, or any one else, could enter that house unknown to its occupants! Had he made electric contact when he had opened the front door, and rung a signal here, perhaps, upstairs—had he set some system of alarm at work when he had touched that window? What did it matter—the details that had heralded his entrance? He was certain now that his presence in the house was known. Only, why had they left him so long without attack? He shook his head with a quick, impatient movement. That, too, was obvious! He was under observation. Who was
