Wolfe was sceptical. "Even so," he grumbled. "You appeared with her in public places. On the street. You took her to dinner. If the police persist it’s highly probable that they’ll turn it up; at that sort of thing they’re extremely proficient. The only way to ward that off with any assurance would be to arrange that they do not persist, and that rests with Mr Goodwin." His head turned. "Archie. Has anything that Mr Laidlaw has said persuaded you that you might have been mistaken?"
"No," I said. "Now that we can name the figure I admit it’s a temptation, but I’m committed. No."
"Committed to what?" Laidlaw demanded.
"To my statement that Faith Usher didn’t kill herself."
"Why? For God’s sake, why?"
Wolfe took over. "No, sir. That is still reserved, even if I accept your retainer. If I do, I’ll proceed on the hypothesis that your account of your relations with Faith Usher is bona fide, but only as a hypothesis. Over the years I have found many hypotheses untenable. It is quite possible that you did kill Faith Usher and your coming to me is a step in some devious and crafty stratagem. Then-"
"I didn’t."
"Very well. That’s an item of the hypothesis. Then the situation is this: since Mr Goodwin is unyielding, and since if the police persist they will surely bare your secret and then harass you, I can do your job only (a) by proving that Faith Usher committed suicide and Mr Goodwin is wrong, or (b) by identifying and exposing the murderer. That would be a laborious and expensive undertaking, and I’ll ask you to sign a memorandum stating that, no matter who the murderer is, if I expose him you’ll pay my bill."
Laidlaw didn’t hesitate. "I’ll sign it."
"With, as I said, no guarantee."
"As I said, I don’t expect any."
"Then that’s understood." Wolfe reached to pick up the cheque. "Archie. You may deposit this as a retainer and advance for expenses."
I got up and took it and dropped it in a drawer of my desk.
"I want to ask a question," Laidlaw said. He was looking at me. "Evidently you didn’t tell the police what happened when I asked Faith Usher to dance with me, and she refused. If you had told them they would certainly have asked me about it. Why didn’t you?"