Newly-married Peggy Heller (Judy Geeson) has just recovered from a nervous breakdown. Her schoolteacher husband, Bob Heller (Ralph Bates), takes her from London to the posh (and secluded) private boys’ school in the countryside where he works, hoping she will be able to recuperate and recover there.
On the eve of moving to the country, Peggy spends the night at the boarding house of Mrs Beamish (Gillian Lind) and is attacked in her room by a man with a mechanical arm. Mrs Beamish calls the doctor, but they do not believe Peggy.
The next morning, she heads with Bob to the school and moves into the cottage in the grounds. Soon, Peggy is attacked by the same man, but her husband does not believe her.
Then she meets the Headmaster Michael Carmichael (Peter Cushing) – and realises that he has a mechanical arm.
Joan Collins plays Carmichael’s haughty young wife, Molly, who spends her time shooting bunnies with a double-barrelled shotgun.
There are some delicious revelations about the school and the headmaster, ultimately giving way to a double twist as we discover Robert (who is in fact not a teacher but Michael’s carer) has fallen in love with Molly, and the couple are plotting to convince Peggy that she is insane so she will kill Michael and be sent back to a mental hospital
Not one of the finest efforts from Hammer, but eminently watchable.
Robert “Bob” Heller
Headmaster Michael Carmichael