"Oh, nothing. I merely thought there might be some hint as to the
motives of the robbery," said Craig. He was fingering one of
those desk-calendars which have separate leaves for each day with
blank spaces for appointments.

"'Close deal Poissan,'" he read slowly from one of the entries,
as if to himself. "That's strange. It was the correspondence
under the letter 'P' that was destroyed at the office, and there
is nothing in the letter-file here, either. Who was Poissan?"

Mrs. Morowitch hesitated, either from ignorance or from a desire
to evade the question. "A chemist, I think," she said doubtfully.
"My husband had some dealings with him--some discovery he was
going to buy. I don't know anything about it. I thought the deal
was off."

"The deal?"

"Really, Mr. Kennedy, you had better ask Mr. Kahan. My husband
talked very, little to me about business affairs."

"But what was the discovery?"

"I don't know. I only heard Mr. Morowitch and Mr. Kahan refer to
some deal about a discovery regarding diamonds."

"Then Mr. Kahan knows about it?"

"I presume so."