"I'm glad old Derek is coming," she said; "you'll like him."

"Who is Derek?"

"He is Lord Leconbury's son, married a rich American woman. Women are simply potty about him."

"Why?"

"Oh, the usual reason—very good-looking and a regular bad lot. Every one goes off their head about him."

"Do you?"

"Sometimes I do," said Lenox, "and sometimes I think I would like to marry a nice curate and live in the country and grow things in frames." She paused a minute, and then added, "An Irish curate would be best, and then I should hunt."

After a minute or two she reverted to her former theme. "There is something queer about Derek. All that family are a bit potty—mad gamblers, you know. In the old days they used to gamble away their wives and their estates, and did most reckless things just for the love of it. Derek would have made a perfect highwayman—debonair and gay, just the right manner." She moved to the door. "Well, come down when you feel like it."

Left alone, Katherine gave herself up to thought. Just at present she felt thoroughly ill at ease and jarred by her surroundings. The shock of the discovery in the train and the reception of the news by her new friends jarred upon her susceptibilities. She thought long and earnestly about the murdered woman. She had been sorry for Ruth, but she could not honestly say that she had liked her. She had divined only too well the ruthless egoism that was the keynote of her personality, and it repelled her.

She had been amused and a trifle hurt by the other's cool dismissal of her when she had served her turn. That she had come to some decision, Katherine was quite certain, but she wondered now what that decision had been. Whatever it was, death had stepped in and made all decisions meaningless. Strange that it should have been so, and that a brutal crime should have been the ending of that fateful journey. But suddenly Katherine remembered a small fact that she ought, perhaps, to have told the police—a fact that had for the moment escaped her memory. Was it of any real importance? She had certainly thought that she had seen a man going into that particular compartment, but she realized that she might easily have been mistaken. It might have been the compartment next door, and certainly the man in question could be no train robber. She recalled him very clearly as she had seen him on those two previous occasions—once at the Savoy and once at Cook's office. No, doubtless she had been mistaken. He had not gone into the dead woman's compartment, and it was perhaps as well that she had said nothing to the police. She might have done incalculable harm by doing so.