After learning that his father may have been the Zodiac killer, Gary brings The New York Times best-selling true crime author Susan Mustafa into the fold to help uncover more information about him. Over the next two years, they follow a dark trail filled with unexpected discoveries as Gary attempts to find some closure. 

Starring:

Gary L. Stewart , Jude Gilford , Kyle DeCamp , Katelyn Kapocsi , Duffy Jennings , Susan Mustafa , Lyn Overton , David Van Nuys , Zach Stewart , Kristy Stewart , Kelly Carroll , Corey Landis , Leona Stewart , Frank Falzon , Cindy Stewart , Hattie Best Polk , Michael Signorelli , Don Allen , Michael Wakshull

Genre:

Documentary, Crime