“Very good. Your blood be on your own head. You are watched when you least expect it.”

“Be careful you don’t go too far and get hurt.”

“Bah! I was in that opium den last night and saw the tragedy.”

Prescott started at this, and looked uneasy. “You there?”

“I was the man who took charge of the remains of that unfortunate lady.”

“Is it possible—I never suspected I had seen you previous to our meeting in the car. What did you accomplish?”

“The thing I desired. The world will never know that lady died anywhere but in her own house.”

“Then you have done a good thing, sir.”

“We detectives are employed to do deeds of mercy as well as those of justice and duty. I bid you good day, Mr. Prescott.”

He had nothing more to say.