“It’s this. When we descended the stairs into the cellar, Paul, it occurred to me that if the police cornered the gang of counterfeiters in that cellar, how would they manage to escape?”

“They wouldn’t,” was Ken’s opinion.

“Suppose you were one of the gang, wouldn’t you think of such a possibility and make sure of an exit, of a means of escape?”

“Certainly.”

“Then that means, that probably there is another entrance or exit into that cellar.”

“That’s right,” said Paul. “I’m glad you thought of it. It is something we should have thought of at once.”

“Oh I wish you didn’t,” said Ken, pretending that he was in tears, “because that only adds another item in the puzzle to solve.”

“Which isn’t going to be very easy.”

“No, it certainly won’t.”