He plainly saw that the walls were not double, and that the floor was merely covered with common dirt.
There was not a piece of furniture nor a lamp in the place.
Yet the detectives had seen a light distinctly.
"They ain't here, sure enough," said the old detective, "and they didn't leave here. Now, how could they vanish, and where did they go?"
"I'm completely rattled. Beyond my depth entirely."
"So am I. This mystery is too much for me to solve."
"See! Daylight is breaking."
"Let's search the place again."
They went at it with renewed zest, and spent two hours vainly searching for the means those speakers employed to drop out of sight.
Finally they desisted.