A stranger enters into and forever alters the life of a couple. He claims to be pursued by certain authorities who intend to prevent him from disclosing a secret that only he holds, whence the title. Is he lying, or insane - or is he telling the truth? Who, if anyone, is after him? And what *is* - the secret?
as David Daguerre
as Julia Vandal
as Thomas Berthelot
as Greta
as Gardien
as Le Médecin
as Bertram
as Homme oiseaux
as Le Forestier
as Gendarme
as Chef commando
as Claude Vandal
