Good David Berkowitz documentaries?

My husband’s uncle, Jack Healy, was a successful NYPD detective who was involved in the investigation and capture of David Berkowitz. There’s a scholarship in his honor in New York and they had a parade when he retired and I’m really proud he was part of our family (he’s no longer alive). I would like to learn more about David Berkowitz but don’t know where to start. Uncle Jack did a lot in his career but this was his most famous case and while I know a lot about Manson and Dahmer and a few others, I have a gap in knowledge about Berkowitz and would like to know more especially since it hits so close to home.