Why does young Norma Restarick think she mught have committed murder? Extraordinary, since London police can find no corpse whatever. And why are her two roommates utterly unconcerned when she's missing from the flat? then she is discovered in a daze, next to the body of her artist boyfriend, and her guilt seems assured. Only Hercule Poirot, the formidable Belgian detective, discerns the baffling pattern of deception that conceals a most cunning killer!