He is among the most infamous serial killers in American history. From 1976 to 1977, David Berkowitz terrorized New York City – under his creepy self-given moniker: the Son of Sam. Using a large caliber. 44 revolver, he unleashed eight horrific shootings across three different boroughs- wounding seven people and killing six. Despite an extraordinary investigation, and hundreds of NYPD officers working the case– Berkowitz’s crime spree lasted over a year. How did he get away with it? What clues did investigators miss? The detectives who worked the case tell the true tale of what it was like in New York City with a gun-toting murderer on the loose.