Gervais escapes from a German concentration camp and assumes the identity of a recently deceased fellow prisoner. Knowing that the dead man has been carrying on a romance by correspondence with Hélène, whom he has never seen, Gervais makes the acquaintance of the woman and they move in, but her sister Agnès dabbles in the black arts, which should be warning enough for Gervais to make himself scarce. Yet he sticks around, intrigued that the dead man's sister, Julia, refuses to blow the whistle on him.

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François Périer
Gervais Larauch / Bernard Pradal

Micheline Presle
Hélène Vanaux

Jeanne Moreau
Agnès Vanaux

Madeleine Robinson
Julia Pradal

Marc Cassot
Bernard Pradal

Pierre Mondy
André Vilsan

Paul Faivre
The Doctor

Paul Faivre
Police Commissioner
SA
Simone Angèle
The Visitor