“Of course.” Knighton looked at her in astonishment. “Don’t you?”

“Oh yes,” said Katherine hastily; “that is, I mean, if it was not just an ordinary train robbery.”

“It might be, of course,” agreed the other, “but it seems to me that the Comte de la Roche fits into this business particularly well.”

“And yet he has an alibi.”

“Oh, alibis!” Knighton laughed, his face broke into his attractive boyish smile. “You confess that you read detective stories, Miss Grey. You must know that anyone who has a perfect alibi is always open to grave suspicion.”

“Do you think that real life is like that?” asked Katherine, smiling.

“Why not? Fiction is founded on fact.”

“But is rather superior to it,” suggested Katherine.