Myth of the Zodiac Killer

I've seen many documentaries over the years on the Zodiac Killer as well as David Fincher's Zodiac film. Myth of the Zodiac Killer is by far the worst of them all. There is not a single shred of actual investigation done during this documentary despite it being well presented. That is the only positive I can give it. This documentary is a disgrace to the victims and everyone who has been affected by the murders. Thomas Henry Horan puts on his tin foil hat in an attempt to become famous. Robert Greysmith wasn't mentioned even once throughout this two part doc. Horan's theory of the Zodiac Killer being simply a hoax is preposterous and holds zero weight.