In Dublin a serial killer is terrorising the female population, seducing his victims on the telephone only to stab them to death on a first date. When school teacher Patricia (Moira Harris) arrives in the city from a farming community she finds herself pursued by two men: her colleague, Robert (John Kavanagh), and a charming American, Danny (Timothy Bottoms). However, when she starts receiving the deadly telephone calls, Patricia is forced to wonder whether either of her suitors could in fact be the sex killer.