A young woman feigns illness in order to infiltrate a mental hospital, where she investigates the disappearance of her sister, a former patient. Meanwhile, the hospital warden and her attendants abuse and torture their charges, forcing them to star in cheap skinflicks.
Ilsa, the Wicked Warden is a 1977 Canadian sexploitation film directed by Jess Franco, written by Ric Meyers, and starring Dyanne Thorne. The plot follows Greta, a warden at a psychiatric hospital for young women, and a girl who feigns illness in order to investigate the disappearance of her sister, a former patient.