"That's a fact," he confessed. "And yet all my thinking doesn't seem to have got me anywhere in particular." He paused to glance about. "Where's your maid? Is she, by any chance, where she could overhear us?"

"No, she's out. This is her afternoon off."

"Good! Then I'll start at the beginning and tell you in as few words as possible the whole thing. But before I do begin, let me ask you a question. It may simplify matters. Anyhow it has a bearing on my principal reason for coming to see you to-day. Isn't Mrs. Howard Hadley-Smith your cousin?"

"Only by marriage. Her husband was my second cousin. He belonged to the branch of the family that owns the hyphen and most of the money. He died six or seven years ago. He was not the most perfect creature in the world, but Claire, his wife—his widow, I mean—is a trump. She's one of the finest women and one of the sanest in New York."

"I'm glad to hear that. Because before we're through with this job—you see I'm assuming in advance that you are going to be willing to help me on it—I say, before we get through it, providing of course we do get through it, it may be necessary to take her into our confidence. That is, if you are sure we can trust absolutely to her discretion."

"We can. But please remember that I don't know what the business is all about."

"I'm coming to that. Oh, by the way, there is one question more: To-morrow night your cousin is giving a costume party or a fancy-dress party of some sort or other, isn't she?"

"Yes; an All Fools' Day party; not a very large one though."

"And you will be going to it, won't you?"

"Yes, indeed! I'm doing the decorating and acting as sort of assistant director of the affair. But what can my cousin and her April Fools' Day party and all that have to do with the matter that brings you here?"