"What do you say?" he muttered irresolutely.

"I think the plan is a good one, and should be adopted," was the instant reply.

Nevertheless, Winter was perplexed. He hemmed and hawed a good deal. Seldom did he hesitate in this fashion. As a rule, he was quick to decide and quicker to act.

"I might entertain your scheme if I were told more about it," he said dubiously, gazing with troubled eyes at the Chinaman's blandly inscrutable face. "Please believe me when I say that I trust your good faith, but I am not sure that even you understand fully the nature of the adventure you have in mind. Wong Li Fu has already committed one murder in London. He has attempted others, and is absolutely careless of consequences. How can I have any guarantee that you and this other gentleman may not be his next victims? He is a person who displays a somewhat forced humor. We might enter the Charlotte Street house at one o'clock and find your corpses there, with labels and ivory skulls neatly attached."

"That will not be so," was the grave answer.

"If I agree, what time do you propose going there?"

"About midnight."

"And do you expect the police to leave the whole neighborhood severely alone for another hour?"

"Not unless you wish it. If you so desire you can occupy both ends of the street, and arrest every Chinaman coming away from No. 412, but let those pass who go towards it."

"Will others go there—friends of yours, I mean?"