A young and beautiful female instructor. While she has a physical relationship with a guard, she also serves as a spy for the warden. She disguises herself as a prisoner and sneaks into the cells, cleverly finding out the prisoners' secrets and reporting them to the warden. As a result, a thought criminal commits suicide, and a colleague who became involved in lesbian relations with a female prisoner is punished.
- Release Date: August 1, 1979
- Runtime: 66 minutes
- Production countries: Japan
- Original Title: 女刑務所・変態
- Original Language: 日本語 (にほんご) (Japanese)
Actors: Naomi Oka, Masami Arisawa, Yuri Izumi, Hitomi Kawai, Yuki Kitazawa