Молчаливый (1973)

Anton Haliakov, appearing as a Soviet scientist, is unexpectedly apprehended by M.I.5 in London. His history is marked by secrets and lies; he was once Clément Tibère, a French citizen who vanished sixteen years ago. The film explores Haliakov's past, revealing the events that prompted him to assume a new identity and allegiance. As the British secret services become deeply involved in his life, they begin to uncover hidden truths about Haliakov and the reasons behind their intense scrutiny. This suspenseful mystery examines themes of identity, loyalty, and espionage during the Cold War.