Demented (1980)

A woman is gang-raped in a horse's stable, and even though the rapists are caught and imprisoned, she is harassed many moons later by ghastly visions of her tormentors, while her husband philanders and every little thing frightens her out of her wits.

Demented was on the Section 3 Nasties List and was liable for seizure and forfeiture by the police. Released with 1m 19s of cuts in 1987.