La mécanique de l'ombre

Two years after a burn-out, Duval is still unemployed. Contacted by an enigmatic businessman, he is offered a simple and well-paid job: transcribing telephone tapping. Desperately financially, Duval accepted without questioning the purpose of the organization employing him. Precipitated at the heart of a political plot, he must face the brutal mechanics of the underground world of the secret services. Read more on Wikipedia.