Starring Mercedes McCambridge (Johnny Guitar, Giant) as the prison warden! Amazing that the legendary Jesus Franco was able to get top-name actors to star in his XXX features. And she's really very good in this (another film that my girlfriend made me watch with her but I'm actually not really watching the whole time if ya know what I mean).
Rewatch: The German and Italian cuts are said to be closer to Franco's original vision but the US cut plays fine. Avoid the 70s French cut cos it was re-edited with bad p*rn inserts. The story is eh but the actresses are awesome. Hardass Mercedes McCambridge, gentle Maria Schell, innocent Maria Rohm, badass Elisa Montes, show-stealing Rosalba Neri, glamorous Claudia Gravy, (sadly) underused Luciana Paluzzi.