Bertal, a despotic and hated theater director, is assassinated before a performance of Macbeth in which he was to play with Aurélia Nobli, his companion and Ludovic Arn, her lover. The police arrive on the scene and the investigation begins. Suspicion first falls on Sigurd, an old actor who had threatened Bertal. But parallels appear between the characters in the play and the actors who play them.
Michel Barsacq
Pierrette's youngest son
Edmond Beauchamp
The actor who plays King Duncan
Pierre Brasseur
Ludovic Arn / Macbeth
Michel Simon
Lucien Bertal / Léonard, his understudy / Banquo
Paul Barge
The bistro
Monelle Valentin
Aurélia Nobli / Lady Macbeth
Jean Brochard
Chief Inspector
Olivier Hussenot
Deputy Inspector Gobinet
Lucien Blondeau
Louis Bugette
Daniel Cauchy
Léon
Gérard Darrieu
A stagehand in the theater
