Ilsa the Wicked Warden

Ilsa the Wicked Warden is a 1977 sexploitation women in prison film written and directed by Jess Franco and starring Dyanne Thorne. The plot follows Greta, a warden at a psychiatric hospital for young women, and a girl portrayed by Tania Busselier, who feigns illness in order to investigate the disappearance of her sister, a former patient.

Thorne was known during the 1970s and early 1980s for her role as Ilsa, in three women-in-prison films starting with Ilsa, She Wolf of the SS (1974). While she portrays a similar character to Ilsa in the film, it was originally released under unrelated titles and only received a title relating it to the series when released theatrically and on home video in the United States. Ilsa the Wicked Warden was shot in Portugal and released in Germany, Switzerland and Canada in 1977.

Thorne later said her role in the film made her lose her contract with Cinépix. Retrospective response to the film has left critics of exploitation cinema and home video releases to be mixed on whether the film was still shocking or not years after its release.