Marcel André Henri Félix Petiot (17 January 1897 – 25 May 1946) was a French medical doctor and serial killer. He was convicted of multiple murders after the discovery of the remains of 23 people in the basement of his home in Paris during World War II. He is suspected of the murder of about 60 victims during his lifetime, although the true number remains unknown. Early life Marcel Petiot was born on 17 January 1897 in Auxerre, Yonne, in north central France. At the age of 11, Petiot fired his father's gun in class and propositioned a female classmate for sex. During his teenage years, he robbed a postbox and was charged with damage of public property and theft. Petiot was ordered to undergo a psychiatric evaluation, resulting in charges being dismissed when it was judged that he had a mental illness. Later accounts make various claims of Petiot's delinquency and criminal acts during his youth, but it is unknown whether they were invented afterwards for public consumption. A psychiatrist reaffirmed Petiot's mental illness on 26 March 1914. After being expelled from school many times, he finished his education in a special academy in Paris in July 1915. Petiot volunteered for the French Army in World War I, entering service in January 1916. He was wounded and gassed during the Second Battle of the Aisne, and exhibited more symptoms of a mental breakdown. Petiot was sent to various rest homes, where he was arrested for stealing army blankets, morphine, and other army supplies, as well as wallets, photographs, and letters; he was jailed in Orléans. In a psychiatric hospital in Fleury-les-Aubrais, Petiot was again diagnosed with various mental illnesses, but was returned to the front in June 1918. He was transferred three weeks later after he allegedly injured his own foot with a grenade, but was attached to a new regiment in September. A new diagnosis was enough to get him discharged with a disability pension. Medical and political career After the war, Petiot entered the accelerated education program intended for war veterans, completed medical school in eight months, and became an intern at the mental hospital in Évreux. He received his medical degree in December 1921 and relocated to Villeneuve-sur-Yonne, where he received payment for his services both from the patients and from government medical assistance funds. At this time Petiot was already using addictive narcotics. While working