- Country: Italy, Spain
- Genres: Thriller
- Release: 1975-05-04
- Director: Manuel Mur Oti
- Writers: Emilio Martínez Lázaro , Rafael Moreno Alba , Manuel Mur Oti , Mario Siciliano
- Language: Spanish
- Stars: Marisa Mell , Marisa Mell , Richard Conte , Anthony Steffen , Richard Baron , Lili Muráti , Carla Calò , Beni Deus , Carmen Maura , Queta Ariel , Juan Ribó
- Runtime: 87 min
- Awards: N/A
- AKA: Perversione (Italy) , A Diary of a Murderess , La encadenada , La encadenada (Spain) , El diario de una asesina (Spain) , Diary of an Erotic Murderess , Diary of an Erotic Mistress
- Plot: A beautiful young woman sets her sights on an aging millionaire. She seduces him, and moves into his mansion with him. She soon tires of him, though, and after she gets rid of him, she goes after his son
- IMDB:tt0070031
A Diary of a Murderess Cast · · · ALL
Manuel Mur Oti
Director
Marisa Mell
Gina / Elisabeth
Anthony Steffen
Richard
Lili Muráti
Louisa
Juan Ribó
Mark
Carmen Maura
The Nun
Richard Baron
The Butler
Richard Conte
The Millionaire
Carla Calò
Mother Superior
Beni Deus
Charles