“Murdered!” cried Katherine.

“So you see, Madame, why we are anxious for any information we can possibly get.”

“But surely her maid⁠—”

“The maid has disappeared.”

“Oh!” Katherine paused to assemble her thoughts.

“Since the conductor had seen you talking with her in her compartment, he quite naturally reported the fact to the police, and that is why, Madame, we have detained you, in the hope of gaining some information.”

“I am very sorry,” said Katherine; “I don’t even know her name.”

“Her name is Kettering. That we know from her passport and from the labels on her luggage. If we⁠—”