"But why does he come here?" questioned Sam.
"Why as near as I know, some relative o' his'n used to have an interest in the lumber company as run the mill," replied the farmer. "It was a man named Foxwell. He's dead now. Maybe he left his share o' the place to this man Crabtree. He was a teacher, wasn't he?"
"He was, years ago. Since then he has been a jailbird," answered Tom.
"A jailbird!"
"Yes, he was in jail for a number of years—and since he has been out he has been trying his best to make trouble for us and for some of our friends," went on Tom. "Come on, let's go after him, instead of talking," he added, as he dismounted.
"That's the talk!" cried Sam. "The biplane can wait."
Dick was as willing as his brothers to go after the former teacher of Putnam Hall, and leaving the farmer to take care of the horses, all three ran up to the door of the old mill. It was unlocked, and one of the hinges was broken, and it was an easy matter for them to push their way into the building.
"Do you think Tad Sobber is with old Crabtree?" asked Sam, in a low voice.
