Something in his voice must have startled Mr. Goby. That worthy gentleman departed from his usual practice of never looking at the person to whom he was talking, and stole a fleeting glance at the millionaire.

“What train did he go on?” demanded Van Aldin.

“The Blue Train, sir.”

Mr. Goby coughed again and spoke to the clock on the mantelpiece.

“Mademoiselle Mirelle, the dancer from the Parthenon, went by the same train.”