1970s British thriller. Susan George stars as Amanda, a young babysitter who arrives at the isolated home of Helen and Jim Lloyd (Honor Blackman and George Cole) to look after their young daughter, Tara (Tara Collinson), for the evening. Shortly after the couple leaves, a series of frightening events set Amanda's nerves on edge, but the real terror begins when Helen's ex-husband (Ian Bannen) turns up at the house after escaping from a nearby psychiatric institute.