Murder, Inc. (Murder, Incorporated) was an organized crime group, active from 1929 to 1941, that acted as the enforcement arm of the Italian-American Mafia, the Jewish Mob, and other closely connected organized crime groups in New York City and elsewhere. The group was composed of Jewish-American and Italian-American gangsters, and members were mainly recruited from poor and working-class neighborhoods in Manhattan (primarily the Lower East Side) and from the Brooklyn neighborhoods of Brownsville, East New York, and Ocean Hill. It was initially headed by Louis "Lepke" Buchalter and later by Albert "The Mad Hatter" Anastasia. Murder, Inc. was believed to be responsible for between 400 and 1,000 contract killings, until the group was exposed in 1941 by former group member Abe "Kid Twist" Rel