Berkowitz, who is now 72, is currently incarcerated at the Shawangunk Correctional Facility in Ulster County, New York. He was found guilty of six counts of second degree murder and seven counts of attempted second degree murder in 1978 and sentenced to 25-years-to-life in prison for each murder.

After being sentenced to multiple life terms in jail, killer David Berkowitz, AKA the Son of Sam, is still very much behind bars. This is what his life is like now

The serial killer’s voice in previously unreleased 1980 recordings provides the hook to director Joe Berlinger’s documentary, which also offers interviews with detectives, survivors and others connected to or obsessed with the case.