Jim Qwilleran and his Siamese sleuths, Koko and Yum Yum, investigate the disappearance of a wealthy railroad buff in this mystery in the New York Times bestselling Cat Who series.Floyd Trevelyan's historic steam locomotive, newly restored, is the newest attraction in Moose County. But the excitement is eclipsed by shock when Trevelyan disappears—along with millions of investors' dollars. Puzzled and suspicious, Qwill's trying to make a connection between the missing millionaire and a recent murder at a nearby railroad tavern. Now, with the help of his cats, Koko and Yum Yum, he's about to prove that the police are on the wrong track.