For a moment he failed to appreciate the entire significance of this. A secret room difficult to enter he could comprehend, but a secret room difficult to QUIT passed his comprehension completely. Moreover, he was no better off for his exploit.

Three minutes sufficed him in which to examine the shelves covering the four walls of the room from floor to ceiling. None of the books were dummies, and slowly the fact began to dawn upon his mind that what at first he had assumed to be a rather simple device, was, in truth, almost incomprehensible.

For how, in the name of Sanity, did the occupant of this room—and obviously it was occupied at times—enter and leave it?

“Ah!” he muttered, shining the light upon a row of yellow-bound volumes from which he had commenced his tour of inspection and to which that tour had now led him back, “it is uncanny—this!”

He glanced back at the rectangular patch of light which marked the trap whereby he had entered this supernormal room. It was situated close to one corner of the library, and, acting upon an idea which came to him (any idea was better than none) he proceeded to throw down the books occupying the corresponding position at the other end of the shelf.

A second trap was revealed, identical with that through which he had entered!

It was fastened with a neat brass bolt; and, standing upon one of the little Persian tables—from which he removed a silver bowl of roses—he opened this trap and looked into the lighted room beyond. He saw an apartment almost identical with that which he himself recently had quitted; but in one particular it differed. It was occupied... AND BY A WOMAN!

Arrayed in a gossamer nightrobe she lay in the bed, beneath the trap, her sunken face matching the silken whiteness. Her thin arms drooped listlessly over the rails of the bunk, and upon her left hand M. Max perceived a wedding ring. Her hair, flaxen in the electric light, was spread about in wildest disorder upon the pillow, and a breath of fetid air assailed his nostrils as he pressed his face close to the gauze masking the opening in order to peer closely at this victim of the catacombs.

He watched the silken covering of her bosom, intently, but failed to detect the slightest movement.

“Morbleu!” he muttered, “is she dead?”