Next week, Netflix is set to release another gripping true crime documentary series called The Sons of Sam: A Descent into Darkness. The four-part documentary series tells the story of David Berkowitz, a serial killer in New York who was on the loose for over a year. After Berkowitz was caught, the city thought the case was over and they could sleep at night again. But, it was really only just beginning – the evidence didn’t all add up and Berkowitz then admitted he wasn’t alone in committing his crimes. Next thing police were on the heels of a potentially murderous cult.