Pen merely looked at him.
"Answer my question, please!"
"I have already answered it."
"Do you expect me to believe that you undertook to save a total stranger from the law?"
"I have stated the facts."
The detective sprang to his feet and shook a violent forefinger at Pen—the old trick of the inquisitor. "You have seen this man before!"
"Don't shout at me," said Pen coolly. "I am not a criminal."
"As to that we'll see," he said ominously. "Did you ever hear of accessory after the fact."
"Well, if I am a criminal," said Pen, "I don't have to testify against myself."
"Don't argue with me if you please," he said. "Just answer my questions."