In this nail-bitingly tense thriller, a girl on a train finds herself in a terrifying situation when her travelling companion vanishes suddenly from their compartment whilst she is sleeping. Every other passenger aboard insists that the woman doesn't exist - that she was never there at all. But as the train rattles on through Europe it becomes increasingly 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.