After the death of her abusive father, lonely librarian Martha is caught in a strange, sadomasochistic relationship with a monstrous husband whom she begins to suspect may be trying to murder her. Margit Carstensen, Karlheinz Böhm, Barbara Valentin, Peter Chatel, Gisela Fackeldey, Adrian Hoven, Ortrud Beginnen Added on Netflix 2023-06-01.