"Where did he go from here?"
"I don't know."
"What! It was a bright moonlight night. Didn't you have interest enough to watch which way he went after having warned him?"
"He paddled straight out from the shore. I didn't wait. The motor-boat was coming back."
"Why didn't they see your tracks in the sand?"
"I walked at the edge of the water."
"What did you want to deceive your father for?"
"I beg your pardon," said Pen with her chin up. "That is between my father and me."
The detective abandoned this line of questioning. "Didn't Counsell tell you where he was going?" he demanded.
"No."