

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?
Acting
Trintignant's smoldering ambiguity steals every scene.
Direction
Enrico weaponizes silence and cramped spaces.

Director
Robert Enrico
Trivia, insights & behind the scenes
This was Enrico's follow-up to the acclaimed 'Les Aventuriers' — he traded epic scope for psychological claustrophobia.
Released during France's post-1968 paranoia about state surveillance and political fugitives; the 'secret' deliberately echoes real anxieties about government secrets and disappeared radicals.
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