Maigret is going about his work in rainy Paris, followed around by Inspector Pyke who has come from Scotland Yard to study the famous French detective's methods. Routine is disturbed when Maigret receives a telephone call from the island of Porquerolles off the Mediterranean coast. A small-time crook has been murdered, the night after he had fervently declared his friendship with Maigret in front of a large group of the island's inhabitants. Maigret and Inspector Pyke leave the greyness of Paris for the sunshine of Porquerolles where Simenon creates a wonderfully evocative atmosphere of the square and cafe, the brilliant sea, the humidity in the air and the life and individuality of each of the inhabitants on the small island.