- HD 1080
- Runtime: 117m.
- Status: Released
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- Languages: fr
- Country: France, Italy
- Director: Claude Pinoteau
- Stars: Lino Ventura, Leo Genn, Suzanne Flon, Robert Hardy, Lea Massari
- keywords: kgb, night train
- Production_studio: Trianon Films, Gaumont International, Medusa Distribuzione
- Slogan: Hitchcock himself is finally rivalled.
- The The Silent One is featured in the top rankings of 1973
- #29 in Top Drama Movies of 1973
- #9 in Top Thriller Movies of 1973
Who is Anton Haliakov, who has just been abducted by the M.I.5 in London? A Soviet scientist apparently. But sixteen years before the man had another identity, Clément Tibère, and another nationality, French. So what led him to become Russian and to change identity? And why are the British secret services interested in him?