A cloaked figure slips into an exclusive psychiatric clinic and murders one of the female patients

　　一个女记者为调查小岛女子监狱的黑暗,孤身一人以合理借口入驻此监狱。在这里,她目睹了监狱女犯们的种种不幸和遭遇。有的女犯在别的女犯掩护下,冒死与前来给监狱送工料的猛男火速偷情；有的女犯因不从狱长夫妇