"It isn't about the robbery," replied Frank. "Although it might have something to do with it, for all we know. It's about the red-headed man who stole Chet's car and who tried to hold up the steamboat ticket office."
"What about him?"
"This!" said Frank, taking the fragment of red hair from his pocket and showing it to his father. "The fellow wore a wig."
Mr. Hardy examined the little tuft of hair closely.
"Where did you find it?" he asked.
"In the wreckage of that smashed car."
Mr. Hardy nodded.
"That seems to link up a pretty good chain of evidence. The man who passed you on the shore road wrecked his car, then stole Chet's roadster and afterward tried to hold up the ticket office. When he failed in that he abandoned the roadster. He wore a red wig that he took off occasionally to confuse pursuers. If we could only find the wig we might be able to get further information."
"Do you think it might help us solve the Tower robbery?" asked Perry.
"Possibly."