“Can you trust him?”

“I think so.”

“But how about his seeing Redway go downstairs at the time he says he did?”

“I believe he saw some one go down at that time.”

“Who? Redway?”

“That I am not ready to answer. It is one of the knotty places in the mystery.”

“Nick, who wrote that note to you?”

“I have no doubt it was the girl who was killed.”

“What was her object?”

“She had serious work for a detective, or she would not have sent for me. The girl wrote another note on her typewriter to-day besides the one sent to me.”