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.
丘ナオミ
as Takako Ichikawa
泉ユリ
as Hitomi Kano
Hitomi Kawai
as Hatsue
Yuki Kitazawa
as Ito
Masami Arisawa
as Matsu
杉佳代子
as Shinobu Matsuoka
今泉洋
as Prison warden
下元史朗
as Inoue, the prison guard
吉田淳
as Komizu
Rumi Sasaki
as Etsuko Kawamura
Takashi Higuchi
as Prison guard
Temujin Hijikata
as Male prisoner
