Why did the dandified tramp found shot in a condemned building choose to live -- and die -- as an outcast? ""No ordinary murder"" -- and Maigret handles it with typical savoir faire and civility from chitchat with the oldtimers of Les Halles and Montmartre to research in the news archives for the identity of the girl, the story of the triangle and a crime passionel with a sympathetic twist. An after-dinner cordial, neat.