In this nail-bitingly tense thriller, a girl on a train finds herself in a terrifying situation when her traveling companion vanishes suddenly from their compartment. Every other passenger insists that the woman doesn't exist—that she was never there at all. But as the train rattles on through Europe it becomes clear that something very sinister is at work. Originally published as The Wheel Spins, this gripping psychological suspense novel was the inspiration for Alfred Hitchcock’s famous 1938 thriller starring Margaret Lockwood and Michael Redgrave.