Uwaki chôsa: Jôyoku ura file

Original title: 浮気調査 情欲裏ファイル

Rie and Keiichi, former colleagues and lovers, continue to meet secretly at love hotels even after Rie's marriage. Saeko Inui, the woman who captures the entire affair on her digital camera and IC recorder, has two faces: outwardly as a secretary at a law firm, and secretly as a detective-like investigator...