Sidney Lumet (June 25, 1924 - April 9, 2011) was an American movie director, producer and screenwriter. He was born in Philadelphia, Pennsylvania. He directed more than 200 plays for live television. He also directed more than 40 movies. His movies include "Serpico", "Dog Day Afternoon", "12 Angry Men", "Network", "Prince of the City" and "Q&A". He died of lymphoma in New York City.