The inhabitants of the windswept island of Sein, in the nineteenth century, in Brittany follow their own religion without need for clergy, but as strangers arrive, their faith and beliefs face a deep crisis.
| Directing | Jean Delannoy | Director |
| Writing | Henri Queffélec | Novel |
| Writing | Pierre Bost | Screenplay |
| Writing | Jean Aurenche | Screenplay |
| Camera | Robert Lefebvre | Director of Photography |
| Sound | René Cloërec | Original Music Composer |