What Was Son Of Sam’s Calling Card? David Berkowitz Said He Was ‘Programmed’ To Kill | Oxygen

David Berkowitz, also known as the “Son of Sam,” was one of America’s most notorious serial killers. His case is infamous for the terror he caused in New York City during the 1970s. Berkowitz used a .44 caliber revolver to ambush mostly young women (often with a male companion) while they were sitting in cars or walking on the street. The attacks were seemingly random and created widespread panic in NYC. He left taunting letters for the police and press, calling himself “Son of Sam” and claiming