Robert Ledru Sleepwalking Murder Confession
In the late 1880s, Chief Inspector Robert Ledru arrived in Le Havre in France to investigate a beachside shooting of Paris shopkeeper André Monet, who had been found dead on the sand with a single bullet through his body. Examining the scene, Ledru noticed footprints that matched his own and later compared the recovered bullet to his German-made revolver, finding that one round had been fired and the markings matched.
Concluding that he had killed Monet while sleepwalking, he reported to his superiors in Paris and demanded to be arrested so he could not harm anyone again. Authorities eventually accepted his explanation, confined him under guard for the rest of his life, and even witnessed him firing a pistol loaded with blanks at a guard while apparently asleep.