Trouble seems to find Jack Elton even when he's in motion. During what he had hoped would be a relaxing honeymoon train excursion with his new bride, he is plunged, once again, into a murder investigation. One of his fellow travelers is found dead in a coach washroom on The Last Spike Special, en route from Vancouver to Calgary. At first it looks like Oscar Dempster took his own life. Even the police officer assigned to the case says he believes that is what happened. But, with the help of another passenger, a medical student, Jack sets out to prove otherwise. The clock is ticking and the miles speed by beneath him as Jack works to find the killer and uncover the motive for murder. The perpetrator must be identified before the train arrives at its final destination. In his quest, Jack will get to know some of his coachmates more intimately than he ever intended, for at least one of them is a deadly assassin.