“Perhaps he is already in there,” suggested Mortimer again.

“We will go down cellar and see,” said the old man. “He might have gone down through that trap door while we was out.”

“That’s what I thought; and he and Randolph may already be hatching up some plan for escaping,” said Felix.

Why old Gunwagner neglected to search the big box under the counter is inexplicable. Possibly the hand of destiny shielded the young detective, for he was on an errand of mercy.

The old man and Felix now descended the stairs into the cellar, and commenced their search for the strange boy who had so thoroughly alarmed them.


CHAPTER XV.

BOB AND HERBERT MEET.

“Well, I can’t understand it,” said Felix, as he and the old fence came up from the cellar. “He certainly isn’t down there.”