Ilsa, now a vicious warden, runs a mental-hospital for young women. A girl deliberately "checks" in to the hospital to find out what has happened to her sister who stayed there. Meanwhile Ilsa and one of the guards are forcing the inmates to have sex with male prisoners, filming them and selling it as pornoflicks.
Surprisingly, not as much brutality in this film, just sex. Also Dyanne Thorne didn't seem to capture the same apathy she did in earlier films and she wasn't as convincing. I think by the third film this trilogy had lost a step. I hear there's a fourth movie, ISLA, THE TIGRESS OF SIBERIA but I don't think a Region 1 DVD is available for it.
