"And in Boris Waberski's presence?"
"Yes."
"Then exactly a week later, on Saturday, the seventh of May, he goes off quickly to the Prefecture of Police?"
"Yes."
"And on Sunday morning by the post comes the anonymous letter?"
Hanaud turned away to Betty, who bowed her head in answer.
"And a little later on the same morning comes the Commissaire, who seals the doors."
"At eleven o'clock, to be exact," replied Ann Upcott.
Hanaud bowed low.
"You are both wonderful young ladies. You notice the precise hour at which things happen. It is a rare gift, and very useful to people like myself."