“I—I don’t know,” said Dick.

“Then you confess that you do know who fired at your father?”

“I did not confess,” said Dick slowly. “I cannot say. I only think I know.”

“Then who was it?”

No answer.

“Dick, I command you to speak,” cried Mr Marston, catching his arm and holding him tightly.

“I don’t know,” said Dick.

“You do know, cried Mr Marston angrily, and I will have an answer. No man’s life is safe, and these proceedings must be stopped.”

For answer Dick wrested himself free.

“I don’t know for certain,” he said determinedly, “and I’m not going to say who it is I suspect, when I may be wrong.”