"I'll do anything in the world you tell me."
"In the first place, then, if Chamberlain should visit you again, which I hardly think he will do, by the way, you are not to mention my being here."
"I will not—I swear it."
The old man raised his finger impressively.
"That's enough! I believe you," he said.
"I'm glad you do."
"In the second place, then, if any other detective comes here it will not be necessary for you to tell him all you have told me."
"I won't tell him anything at all, if you say so."
"Well, my dear, manage that the best you can."
"I think I can manage to hold my tongue."