Jake Gyllenhaal | Robert Graysmith | |
Anthony Edwards | Inspector William Armstrong | |
Brian Cox | Melvin Belli | |
Richmond Arquette | Zodiac 1/Zodiac 2 | |
John Lacy | Zodiac 4 | |
Ed Setrakian | Al Hyman |
Mark Ruffalo | Inspector David Toschi | |
Robert Downey Jr. | Paul Avery | |
John Carroll Lynch | Arthur Leigh Allen | |
Bob Stephenson | Zodiac 3 | |
Chloë Sevigny | Melanie | |
John Getz | Templeton Peck |