The story takes place in 1917. Véronique is a young woman of 35 years, nurse at the military hospital of Besançon. She suddenly learns of the murder of her husband, the mysterious Count Vorski, whom she has not seen for fourteen years. Her research will also lead her to the track of her father and son whom she believed to have died in a shipwreck, already a long time ago. From clue to clue, here we are in Brittany, on this island with a name so ill-fitting... Brutal deaths, enigmatic words written... by whom? A frightening prophecy, the superstitious terror of the island's inhabitants, and suddenly, Veronica d'Hergemont can no longer leave this island. She's stuck alone. Almost alone...
Claude Jade
as Véronique d'Hergemont
Jean-Paul Zehnacker
as Alexis Vorski
Yves Beneyton
as Philippe Maroux
Georges Marchal
as Antoine d'Hergemont
Pascal Sellier
as François d'Hergemont / Éric Vorski
Julie Philippe
as Elfriede Vorski
Marie Mergey
as Honorine
Pierre Semmler
as Otto
Jean-René Gossart
as Conrad