Myths of the sunken city of Ys leads to the murder of a young couple.
| Actor | Role |
|---|---|
 Pasquale AleardiGeorges Dupin | Georges Dupin |
 Ludger PistorAntoine Manet | Antoine Manet |
 Christian RedlCharles Morin | Charles Morin |
 Annika BlendlNolwenn | Nolwenn |
 Ludwig BlochbergerRiwal | Riwal |
 Udo SamelPräfekt Locmariaquer | Präfekt Locmariaquer |
 Arnd KlawitterPierre Leblanc | Pierre Leblanc |
 Jan Georg SchütteKadeg | Kadeg |
 Dörte LyssewskiGaetane Gochat | Gaetane Gochat |