Sylvie, a young woman who believes to be cursed, lives in the town of Carcassonne with her guardian, Mr. Toulzac. He is a retired teacher who wishes to discover the secret of the Cathars, a Christian sect of the Middle Ages that glorified death over life. Sylvie meets Roland, a composer who instills new hope into her troubled mind. Mr. Toulzac then asks her then to renounce the world and go down a secret tomb he has just found.
| Directing | Serge de Poligny | Director |
| Writing | Jean Anouilh | Screenplay |
| Writing | Gaston Bonheur | Screenplay |
| Writing | Serge de Poligny | Screenplay |
| Editing | Jean Feyte | Editor |
| Sound | Marcel Mirouze | Music |
| Art | Jacques Krauss | Production Design |
| Camera | Roger Hubert | Director of Photography |