passion. I myself think the solution of a train robber is the more probable. These bandits have become very bold of late.”
Poirot looked suddenly across at Katherine.
“And you, Mademoiselle,” he said, “you heard and saw nothing during the night?”
“Nothing,” said Katherine.
Poirot turned to the Commissary.
“We need detain Mademoiselle no longer, I think,” he suggested.
The latter nodded.
“She will leave us her address?” he said.
Katherine gave him the name of Lady Tamplin’s villa. Poirot made her a little bow.
“You permit that I see you again, Mademoiselle?” he said. “Or have you so many friends that your time will be all taken up?”
“On the contrary,” said Katherine, “I shall have plenty of leisure, and I shall be very pleased to see you again.”
“Excellent,” said Poirot, and gave her a little friendly nod. “This shall be a ‘roman policier’ à nous . We will investigate this affair together.”