Chapter Seven. Seeking a Clue

John Sharp was more than surprised at the effect his piece of information had on Tom Swift. Though the young inventor had all along suspected Andy of having the missing plans, yet there had been no positive evidence on this point. That, coupled with the fact that the red-haired bully had not been seen in the vicinity of Shopton lately, had, in a measure, lulled Tom's suspicions to rest, but now his hope had been rudely shattered.

"Do you really think that's his game?" asked Mr. Sharp.

"I'm sure of it," replied the youth. "Though where he is building his aeroplane I can't imagine, for I haven't seen him in town. He's away."

"Are you sure of that?"

"Well, not absolutely sure," replied Tom. "It's the general rumor that he's out of town."

"Well, old General Rumor is sometimes a person not to be relied upon," remarked the balloonist grimly. "Now this is the way I size it up: Of course, all I know officially is that Andy Foger has sent in an entry for the big race for the ten-thousand-dollar prize which is offered by the Eagle Park Aviation Association. I'm a member of the arrangements committee, and so I know. I also know that you and several others are going to try for the prize. That's all I am absolutely sure of.

"Now, when you tell me about the missing plans, and you conclude that Andy is doing some underhanded work, I agree with you. But I go a step farther. I don't believe he's out of town at all."

"Why not?" exclaimed Tom.

"Because when he has an airship shed right in his own backyard, where, you tell me, he once made a craft in which he tried to beat you out in the trip to Alaska, when you think of that, doesn't it seem reasonable that he'd use that same building in which to make his new craft?"

"Yes, it does," admitted Tom slowly, "but then everybody says he's out of town."

"Well, what everybody says is generally not So. I think you'll find that Andy is keeping himself in seclusion, and that he's working secretly in his ship, building a machine with which to beat you."

"Do you, really?"

"I certainly do. Have you been around his place lately?"

"No. I've been too busy; and then I never have much to do with him."

"Then take my advice, and see if you can't get a look inside that shop. You may see something that will surprise you. If you find that Andy is infringing on your patented ideas, you can stop him by an injunction. You've got this model patented, I take it?"

"Oh, yes. I didn't have at the time the plans were stolen, but I've patented it since. I could get at him that way."

"Then take my advice, and do it. Get a look inside that shed, and you'll find Andy working secretly there,