Cast

Jake Gyllenhaal Robert Graysmith
Mark Ruffalo Inspector David Toschi
Anthony Edwards Inspector William Armstrong
Robert Downey Paul Avery
Brian Cox Melvin Belli
John Carroll Lynch Arthur Leigh Allen
Bob Stephenson Zodiac No.3
John Getz Templeton Peck
John Terry Charles Theiriot
Elias Koteas Sergeant Jack Mulanax
Dermot Mulroney Captain Marty Lee
Donal Logue Ken Narlow
Lee Norris Young Mike Mageau
Jimmi Simpson Older Mike Mageau
Pell James Cecelia Shepherd
Philip Baker Hall Sherwood Morrill
Jason Wiles Lab Tech Dagitz
James Carraway Shorty
Doan Ly Marvin Belli's Housekeeper
Zach Grenier Mel Nicolai
John Mahoney Riverside Captain
Jules Bruff Catherine Allen
Adam Goldberg Duffy Jennings
James LeGros Officer George Bawart
Clea DuVall Linda Ferrin
Paul Schulze Sandy Panzarella
Adam Trese Detective No.1
Penny Wallace Mulanax's Secretary
F. Lennie Bleecher Informant
Michel Francoeur Man on Marquee

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