Thursday, 6th May 2021 at 5:03 pm Just arrived on Netflix is The Sons of Sam â a brand new docuseries looking at the crimes of 1970s serial killer David Berkowitz. Advertisement The true crime series dives into the killings that terrorised New York between 1976 and 1977, claimed to have been committed by an anonymous murderer who called himself âThe Son of Samâ in letters to the press and police. While 24-year-old David Berkowitz was eventually convicted of the six murders and numerous attacks, some â including journalist Maury Terry â believe that he didnât act alone. This Netflix four-parter explores the theory that Berkowitz committed the crimes as part of a satanic cult and through archive footage, focuses on Terryâs own investigation.