Adrien Josset is accused of killing his wife. To Maigret's astonishment, Josset does not try to refute this serious accusation and says: "When I saw her lying dead in front of me, I felt guilty, as if I had killed her myself." Inspector Maigret is taking a close look at Colonel Lalinde, the main witness in the Josset case. Based on the 54th Maigret novel Une confidence de Maigret from 1959, published in German under the title Maigrets Geständnis.