The old sea dog Captain Joris has lost his memory after a blow to the head. Maigret follows the trail of the confused man to the small coastal town of Honfleur. There, some unpleasant surprises await the inspector. Maigret, who finds the behavior of Mayor Grandmaison strange, is attacked and knocked down ... Based on the 15th novel in the Maigret series: Le port des brumes (1932). Published in German translation as Maigret and the Mysterious Captain.