The mysterious events in the life of a young girl found murdered on the banks of the Seine are gradually elucidated by a police investigation. Will the culprit be unmasked?
| Actor | Role |
|---|---|
| DDominique Rozancommisaire Salva | commisaire Salva |
 François PerrotRaymond Maillard | Raymond Maillard |
 Jacques SerresGeorges Werther | Georges Werther |
 Sabine GlaserClara Neuville | Clara Neuville |
 Jacques CharbyInspecteur Lavigne | Inspecteur Lavigne |