This is a cozy mystery that plays in Provence.
While Blanc and Marius accompany a state ship with divers who mount a grate in front of a cave entrance in the Calanque, they see a dead diver near a sailing ship. Blanc takes the investigation, but soon realizes that he steps in his investigation into a wasp nest and the authorities in Paris try to stop him. During his investigation, he encounters an environmental sin that needs to be hushed up. Soon after, there will be another dead.
Blanc is constantly over-tired, since in this case he usually has to investigate on his own, as a colleague is on a honeymoon trip and his colleague finally gets up to tackling a therapy regarding his alcohol addiction.
It's a quick amusing read. ( )