출연진
Robert Graysmith
Himself - Author of 'Zodiac' and 'Zodiac Unmasked'
Arthur Spinelli
Himself - Former Solano County Saloon Owner
Donald Cheney
Himself - Former Friend of Arthur Leigh Allen
Sandy Panzarella
Himself - Friend of Donald Cheney & Acquaintance of Arthur Leigh Allen
Norman Boudreau
Himself - College Friend of Arthur Leigh Allen
George Bawart
Himself - Vallejo Police Dept (Ret)
Sharon Pagaling Hagon
Herself - Criminal Profiler
Donald Fouke
Himself - San Francisco Police Dept (Ret)
David Slaight
Himself - Napa County Sheriff Dept (Ret)
Nancy Slover
Herself - City of Vallejo '355' Operator
Kim Rossmo
Himself - Research Professor, Department of Criminal Justice, Texas State University