Before Watching Netflix's The Sons of Sam, Here's What to Know About David Berkowitz 176 Shares Netflix's new docuseries The Sons of Sam: A Descent Into Darkness takes on the infamous case of David Berkowitz, the 24-year-old postal worker from Yonkers, NY, who was convicted for killing six people between 1976 and 1977. The true-crime series focuses primarily on the records and investigations of journalist Maury Terry as he pushed against the single-shooter narrative that the police and media presented. While the NYPD stuck to the story that Berkowitz committed his crimes alone, Terry believed that Berkowitz had other accomplices and was part of a more widespread satanic cult. In interviews, Berkowitz even confirmed some of Terry's theories.