Lavrentiy Pavlovich Beria was a Soviet politician and one of the longest-serving and most influential of Joseph Stalin's secret police chiefs, serving as head of the People's Commissariat for Internal Affairs (NKVD) from 1938 to 1946, during the country's involvement in the Second World War. Beria was also a prolific sexual predator, who serially raped scores of girls and young women, and murdered some of his victims.