Roy Albert DeMeo was an Italian-American mobster in the Gambino crime family of New York City. He headed his own group referred to as the "DeMeo crew", which became notorious for a very large number of murders, possibly as many as 200, with the majority of them committed by DeMeo himself and for the grisly way they disposed of the bodies, which became known as "the Gemini Method". Due to the method of killing and the high number of murders this classified DeMeo as a serial killer.