“That’s my idea, though both of us may be mistaken.”

“The island makes a good hiding-place,” I went on. “But still they can’t stay there forever, and I take it they would rather leave the neighborhood entirely.”

“They can’t do that if all the roads are guarded, and Squire Slocum said such was a fact. They would have a sweet job trying to get through the woods.”

“It’s a wonder they committed the robbery when the chances to escape were so slim.”

“I guess they thought to get away before the crime was discovered. Mr. Webster said it was only by accident that it was not allowed to run on till noon or later. The old vault, in which the safe was situated where the diamonds were placed, is not used for storing the regular bank-funds, and besides, Mr. Merton, the cashier, rarely gets to the bank as early as he did on the morning following the robbery.”

“It was all known beforehand among the three men,” I went on. “But how did they get their knowledge?”

“Mr. Camp, one of the jewelers, says he thinks he knows this Avery, but he is not sure. The description is all right; but the name of the man he knew was Denting.”

“A name among such fellows is easily changed.”

“Of course. But then—hullo, whose boat is that?”