In a small coastal village in Normandy, the old postmistress Léonie is murdered. The villagers and some students accuse the new teacher Gastin of the crime. who was blackmailed by the woman. Inspector Jules Maigret makes some surprising discoveries during his investigation. It was directed by the Austrian Rudolf Katscher (1904-1994) under his pseudonym Rudolph Cartier. The filmmaker and screenwriter emigrated to London in 1935 and worked for the BBC from 1952, but also repeatedly for German and Austrian television. As a screenwriter he was responsible for the German cinema thrillers Der Zinker (1931) and Der Rächer (1960), both based on Edgar Wallace. For German-language TV he directed, for example, the exciting thrillers Alibi for James (1966) and Gaslicht (1956). Based on the 44th Maigret novel Maigret à l'école (1953), which the weekly magazine Le Mouistique first published in six parts between 14 February 1954 and 21 March 1954. The German book title is Maigret und die schrecklichen Kinder.