“Chained fast to a tree!” cried Janet. “How can that be?”

“With one of the tire chains,” went on Mr. Martin. “One end of a tire chain is fast around a tree and the other end of the chain is tangled around one of the car springs. No wonder I couldn’t move!”

“How did it happen?” asked Mrs. Martin.

“It couldn’t have happened by accident,” replied her husband. “That chain never got there by itself. I remember using the chains the other day, and, instead of putting them with the tools under the seat, I left them in the front of the car. Some one must have taken a chain and made us fast.”

As Mr. Martin said this he looked sharply at Trouble, who had been sitting between him and his wife in the front seat.

“Did you do that Trouble?” asked his mother, shaking a finger at him.

“I guess maybe I did,” admitted small William.

“Don’t you know that you did it?” asked his father sternly.

“Yes, I did it,” confessed Trouble.

“What for?” asked Janet.