"Maybe," agreed Tom. "Well, we'll let it go at that. Only I hope they don't come again."
Mr. Damon was soon home with his wife again, and Peters and Boylan were held in heavy bail. They had secreted most of Mr. Damon's wealth, falsely telling him it was lost, and they were forced to give back his fortune. The evidence against them was clear and conclusive. When Tom went into court with his phonograph record of the talk of Peters, even though the man's voice was hoarse from a cold when he talked, and when his picture was shown, in the telephone booth, the jury at once convicted him.
Boylan, when he learned of the missing button in Tom's possession, confessed that he and some of his men who were birdmen had taken Tom's airship. They wanted a means of getting Mr. Damon to the lonely house without being traced, and they accomplished it.
As Tom had surmised, Peters had become suspicious after his last talk with Mrs. Damon, and had fled. He disguised himself and went into hiding with the others at the lonely house. Then he learned that the authorities of another city, where he had swindled many, were on his trail, and he decided to decamp with his gang, taking Mr. Damon with them. For this purpose Tom's airship was taken the second time, and a wholesale escape, with Mr. Damon a prisoner, was planned.
But fate was against the plotters. Two of them did manage to get away, but they were not really wanted. The big fish were Peters and Boylan, and they were securely caught in the net of the law. Peters was greatly surprised when he learned of Tom's trap, and of the photo telephone. He had no idea he had been incriminating himself when he talked over the wire.
"Well, it's all over," remarked Ned to Tom, one day, when the disabled auto and the airship had been brought home and repaired. "The plotters are in prison for long terms, and Mr. Damon is found, together with his fortune. The photo telephone did it, Tom."
"Not all of it--but a good bit," admitted the young inventor, with a smile.
"What are you going to do next, Tom?"
"I hardly know. I think--"
Before Tom could finish, a voice was heard in the hall outside the library.