The fishing trawler 'Cap Fagnet' does not seem to sail under any lucky star, because in stormy seas the ship's boy Jean-Marie is washed overboard. When the steamer and its spoiled cargo finally reaches its home port, a mysterious stranger wearing yellow shoes kills Captain Fallut on his first shore leave. The ship's radio operator, Pierre Le Chinche, is suspected of having had a violent argument with the captain during the voyage and has disappeared without a trace since the incident. But his bride, Marie Leonnec, does not believe in her fiancé's guilt and asks Maigret for help ... Based on the 8th Maigret novel Au Rendezvous des Terre-Neuvas (1931), published in German first as Maigret und das Verbrechen auf Bord and later in a new translation as Maigret am Treffen der Neufundlandfahrer.