Jake Gyllenhaal … Robert Graysmith
Mark Ruffalo … Inspector David Toschi
Anthony Edwards … Inspector William Armstrong
Robert Downey Jr. … Paul Avery
Brian Cox … Melvin Belli
John Carroll Lynch … Arthur Leigh Allen
Richmond Arquette … Zodiac 1 & 2
Bob Stephenson … Zodiac 3
John Lacy … Zodiac 4
Chloë Sevigny … Melanie
Ed Setrakian … Al Hyman
John Getz … Templeton Peck
John Terry … Charles Thieriot
Candy Clark … Carol Fisher
Elias Koteas … Sgt. Jack Mulanax

Director:

David Fincher