Fear In The Night

Peggy Judy Geeson is recovering from a nervous breakdown when she is attacked by an unseen assailant. As she struggles to break free, her attacker's artificial arm comes loose and Peggy blacks out in sheer terror.
Peggy and her new husband Robert (Ralph Bates) spend their honeymoon at the country school where Robert is a teacher. The school is eerily deserted. Except for the headmaster Michael (Peter Cushing) and his wife Molly (Joan Collins). Returning to her cottage. Peggy is once more attacked by a man with one arm.
Robert goes to London on behalf of the headmaster, but leaves his shotgun behind to reassure Peggy.
Michael visits Peggy at the cottage late one night, and she notices for the first time that he only has one arm.
Terrified, she reaches for the gun....