People who've been here a long time have been talking about him. This morning, when I was having my coffee and croissants, it was all they were talking about. The old folks, even the middle-aged people, remember him and can't understand how he could have become a tramp. Apparently he was a good-looking man, tall and strong, who had a good profession and made a very decent living. And yet he vanished overnight without saying a word to anyone. The death of a homeless man in a condemned building in Les Halles leads Maigret on the trail of the vagrant's mysterious past, and an event that happened years ago in the close-knit community of Montmartre. When a socially isolated vagrant is found dead in the condemned building where he had been sleeping in Les Halles, Paris, Maigret must delve into the victim's mysterious past to discover who could have killed him