When the body of Honoré Cuendot, an old burglar acquaintance of Maigret’s, is found in the Bois de Boulogne with his face bashed in, Maigret is appalled that his superiors consider it a mere gangland killing. And there’s a personal element to this case as well: Maigret rather liked Cuendot. Instead of concentrating on the flashy bank robberies occupying the rest of his department, Maigret decides to inquire into Cuendot’s life—and finds himself tied up in the bank robberies, too, along the way.