"Do you mean over at the auction?"
"No, I mean down in my boathouse, where you sneaked in the other night and tried to do some damage.
"The other night!" cried Andy. "I never was near your boathouse any night and I never lost my keys there! I lost these the day of the auction, on Mr. Hastings' ground, and I've been looking for them ever since."
"Didn't you sneak in my boathouse the other night and try to do some mischief? Didn't you drop them then?"
"No, I didn't," retorted Andy earnestly. "I lost those keys at the auction, and I can prove it to you. Look, I advertised for them in the weekly Gazette."
The red-haired lad pulled a crumpled paper from his pocket and showed Tom an advertisement offering a reward of two dollars for a bunch of keys on a ring, supposed to have been lost at the auction on Mr. Hastings' grounds in Lanton. The finder was to return them to Andy Foger.
"Does that look as if I lost the keys in your boathouse?" demanded the bully sneeringly. "I wouldn't have advertised them that way if I'd been trying to keep my visit quiet. Besides, I can prove that I was out of town several nights. I was over to an entertainment in Mansburg one night and I didn't get home until two o'clock in the morning, because my machine broke down. Ask Ned Newton. He saw me at the entertainment."
Andy's manner was so earnest that Tom could not help believing him. Then there was the evidence of the advertisement. Clearly the squint-eyed youth had not been the mysterious visitor to the boathouse and had not unlocked the forward compartment. But if it was not he, who could it have been and how did the keys get there? These were questions which racked Tom's brain.
"You can ask Ned Newton," repeated Andy. "He'll prove that I couldn't have been near your place, if you don't believe me."
"Oh, I believe you all right," answered Tom, for there could be no doubting Andy's manner, even though he and the young inventor were not on good terms. "But how did your keys get in my boat?"