![Frustration (1971) Frustration (1971)](http://image.tmdb.org/t/p/w185/wLwjAyr6pHO4j9qZt4FZWZozPrI.jpg)
Overview
Young prostitutes are taken to a penal school run by a group of nuns so that they can recover. However, the current mother superior is actually a mad assassin who killed the real one and took her place, changing the entire treatment and discipline regime of the boarding school.