- Country: France
- Genres: Crime, Drama, Thriller
- Release: 1973-06-21
- Director: Jesús Franco
- Writers: Jesús Franco , Elisabeth Ledu de Nesle
- Language: French
- Stars: Howard Vernon , Doris Thomas , Anne Libert , Jacqueline Laurent , Montserrat Prous , Kali Hansa , Francisco Acosta , Manuel Pereiro , Jesús Franco , Caroline Rivière
- Runtime: 86 min
- Awards: N/A
- AKA: Sinner , Le journal intime d'une nymphomane (France, French Republic) , Le giornate intime di una giovane donna (Italy) , Diary of a Nympho , Le journal intime d'une nymphomane , Sinner: The Secret Diary of a Nymphomaniac (United Kingdom) , Sinner: The Secret Diary of a Nymphomaniac , El diario íntimo de una ninfómana (Argentina) , Diario íntimo de una ninfómana (Spain) , Diary of a Nymphomaniac (United States of America) , Jûshoku no nioi (Japan) , Bir Seks Manyağının Anı Defteri (Turkey) , Sinner (United States of America) , Sinner: The Secret Diary of a Nymphomaniac (United States of America) , Интимный дневник нимфоманки (Russian Federation) , Le journal intime d'une nymphomane (Germany)
- Plot: Linda Vargas picks up Ortiz in a bar where she works in a lesbian show with Maria Toledano. She seduces him, phones the police and kills herself. Ortiz is held on suspicion of her murder. Ortiz's wife, Rosa, visits a friend of Linda's, the Countess Anna de Monterey who tells her how Linda went into a spiral of sex and drugs after being assaulted by Ortiz as a young girl at a fair-ground. Linda became the Countess's lover, then had a disastrous love affair with Alberto, the Countess' boyfriend. Rosa also meets Maria, who holds Linda's diary, where she relates how a fake Doctor turned her away from drugs and into a nymphomaniac.
- IMDB:tt0069973
Sinner: The Secret Diary of a Nymphomaniac Cast · · · ALL
Jesús Franco
Director
Montserrat Prous
Linda Vargas
Anne Libert
Comtesse Anna de Monterey
Howard Vernon
Le docteur
Manuel Pereiro
M. Ortiz
Francisco Acosta
Alberto
Jesús Franco
Inspecteur Hernandez
Kali Hansa
Maria Toledano
Doris Thomas
Mrs. Schwartz / the photographer
Caroline Rivière
Yelena Samarina
Hélène (uncredited)