Abnormal Blood (1967)

Abnormal Blood 1967 / 日本暴行暗黒史 異常者の血 1967 / Nihon Boko Ankokushi: Ijosha no Chi , Nihon Bôkô Ankokushi: Ijôsha no Chi

A detective investigating a serial rapist discovers that he and the perpetrator come from the same lineage of depraved individuals, a genealogy of violent and sexually perverse deviants that stretches through the Meiji, Taisho and Showa eras and can even be traced back to the Edo era. (Source: theMoviedb)