“Certainly, Mr. Pycroft, certainly,” the other resumed in a calmer tone. “You may wait here a moment; and there is no reason why your friends should not wait with you. I will be entirely at your service in three minutes, if I might trespass upon your patience so far.” He rose with a very courteous air, and, bowing to us, he passed out through a door at the farther end of the room, which he closed behind him.

“What now?” whispered Holmes. “Is he giving us the slip?”

“Impossible,” answered Pycroft.

“Why so?”

“That door leads into an inner room.”

“There is no exit?”

“None.”