Peggy (Judy Geeson) is recovering from a nervous breakdown and thinks she had been attacked by a man with a mechanical arm. Now married to Robert (Ralph Bates) who works at a boarding school she moves in and encounters the rather sinister headmaster (Peter Cushing) and his even more sinister wife Molly (Joan Collins)...
Peggy is attacked again by a man with a mechanical arm though Robert doesn't believe her. Is she imagining things? Why is the school so strange and eerie, is it even really a school?
This is a psychological horror film full of suspense with a rather interesting twist.
