Oliver Reed plays the sophisticated, secretive psychologist "Raglan" who is treating "Nola" (Samantha Eggar), the wife of "Frank" (Art Hindle). His techniques are either cutting edge or reckless, depending on your point of view - and his peers take the latter view, so he carries out much of his work in a remote facility that appears little better than a glorified cabin. When his young daughter returns from a visit to her mother, "Frank" notices some rather nasty bruises on her back. Concerned, he forbids his daughter from returning, but when firstly his mother, then his father are brutally kil...