- HD 1080
- Runtime: 102m.
- Status: Released
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- Languages: fr
- Country: France, Italy
- Director: Robert Enrico
- Stars: Jean-Louis Trintignant, Marlène Jobert, Philippe Noiret, Solange Pradel, Antoine Saint-John
- keywords: prison, escape, police, refugee, patient, voyage, secret, mystery, thriller
- Production_studio: Président Films, Valoria Films
- The The Secret is featured in the top rankings of 1974
- #64 in Top Drama Movies of 1974
- #18 in Top Thriller Movies of 1974
- #11 in Top Mystery Movies of 1974
A stranger enters into and forever alters the life of a couple. He claims to be pursued by certain authorities who intend to prevent him from disclosing a secret that only he holds, whence the title. Is he lying, or insane - or is he telling the truth? Who, if anyone, is after him? And what *is* - the secret?