“Nothing. Never even run across her accidentally like. I bet she is tooling it round some of these foreign resorts. Being a Marquise to the life. You couldn’t put one over on Kitty. She would give as good as she got any day.”

“I see,” said Poirot thoughtfully.

“I am sorry I can’t tell you more, Monsieur Poirot,” said the other. “I would like to be of use to you if I could. You did me a good turn once.”

“Ah, but we are quits on that; you, too, did me a good turn.”

“One good turn deserves another. Ha, ha!” said Mr. Aarons.

“Your profession must be a very interesting one,” said Poirot.