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 Trevelyans historic steam locomotive, newly restored, is the newest attraction in Moose County. But the excitement is eclipsed by shock when Trevelyan disappearsalong with millions of investors dollars. Puzzled and suspicious, Qwills 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, hes about to prove that the police are on the wrong track.