Maigret's phone rings, he hears a voice insulting the police, and shortly afterwards a shot is fired: a situation that the commissioner experienced in a very similar way a few months ago, when a crook said goodbye to the world in this way. This time the victim is the diamond dealer Goldfinger. The crime took place in the police station of Inspector Lognon, a less than successful and therefore always passed over in promotions. Nevertheless, Maigret gives him freedom of action, only wants to keep an overview in the background. Will the Inspector succeed in setting a trap for the murderer? Based on the story Maigret et l'inspecteur malgracieux, first published in 1946 under the original title Maigret et l'inspecteur malchanceux. The three German titles of the various translations were in chronological order: Maigret and the Grumpy Inspector, Maigret and Inspector Lognon and Maigret and Inspector Grumpy.