Jake Gyllenhaal as Robert Graysmith: a cartoonist for the San Francisco Chronicle. While researching the film, Fincher considered Gyllenhaal to play Graysmith. According to the director, "I really liked him in Donnie Darko and I thought, 'He's an interesting double-sided coin. He can do that naive thing but he can also do possessed'".[1] To prepare for his role, Gyllenhaal met Graysmith and videotaped him in order to study his mannerisms and behavior.[2] Mark Ruffalo as SFPD Inspector David Toschi: Initially, Ruffalo was not interested in the project but Fincher wanted him to play Toschi. He met with the actor and told him that he was rewriting the screenplay. "I loved what he was saying and loved where he was going with it," the actor remembers.[3] For research, he read every report on the case and read all the books on the subject. Ruffalo met Toschi and found out that he had "perfect recall of the details and what happened when, where, who was there, what he was wearing. He always knew what he was wearing. I think it is seared into who he is and it was a big deal for him".[3] Robert Downey Jr. as Paul Avery, a journalist at the San Francisco Chronicle who covered the Zodiac killer case. Anthony Edwards as SFPD Inspector William Armstrong: When casting the role, Fincher said he thought of Edwards because "I knew I needed the most decent person I could find, because he would be the balance of the movie. In a weird way, this movie wouldn't exist without Bill Armstrong. Everything we know about the Zodiac case, we know because of his notes. So in casting the part, I wanted to get someone who is totally reliable".[4] Brian Cox as Melvin Belli, a prominent defense attorney who received a letter from the Zodiac killer. Originally, Gary Oldman was to play him but "he went to a lot of trouble, they had appliances, but just physically it wasn't going to work, he just didn't have the girth," Graysmith remembers.[5] Cox was cast instead. John Carroll Lynch as Arthur Leigh Allen, a prime suspect in the case. Allen was never charged with these crimes. Chloë Sevigny as Melanie Graysmith, Graysmith's wife. John Getz as Templeton Peck. Elias Koteas as Sgt. Jack Mulanax, a police detective from Vallejo. Dermot Mulroney as Captain Marty Lee, Armstrong's and Toschi's supervisor in the SFPD homicide division. Donal Logue as Ken Narlow, a police detective in Napa. Philip Baker Hall as Sherwood Morrill, a handwriting analyst. Adam Goldberg as Duffy Jennings, a real life journalist who replaced Avery at the San Francisco Chronicle when the latter went to the San Francisco Examiner. He received a letter from the Zodiac in 1978.
The cast of The Zodiac Killer - 1971 includes: Gabe Balcar as Secretary Ray Cantrell as Cab Driver Manny Cardoza as Hippy Bertha Dahl as Mrs. Crocker Mary Darrington as First Murder Edna DeHart as Susan Bart Dempster as Elevator Murder Brian Falkner as Ray George Fryette as Mr. Quigley Richard Garrison as Dick Gloria Gunn as Marilyn Robert Hanson as Bobby Tom Hanson as Paul Steve Harper as Editor Larry Hines as Black Man Wayne Jeppson as Cab Driver Lundyne Johns as Spare Tire Murder Elliot Katt as Copy Boy Louise Keene as Kay Hans Klein as Bodyguard Susie Knolan as Mrs. Simpson Aaron Koslow as Psychic Don Law as Cab Driver Pearl Leidy as Car Hood Murder Ray Lynch as Sgt. Pittman Werner Maahs as Kelly Dion Marinkovich as Helen Norma Michaels as Gloria Melissa Mosley as Nurse Dick Nedwick as Morrie Emanuel Nedwick as Nedwick Marleen Parris as Housewife Arthur Porrine as Bill Jo Porrine as Sandy Ed Quigley as Tony Hal Reed as Jerry Donna Register as Donna Sharon Ridgeway as Hitchhiker Frank Sanabek as Joe Barbara Schillaci as Barbara Norma Takaki as Lakey Dennis Thomann as Pete Stacy Videen as Julie Doodles Weaver as Doc
The cast of The Zodiac - 2005 includes: Shelby Alexis Irey as Bobbie Philip Baker Hall as Frank Perkins Brian Bloom as Zodiac Justin Chambers as Inspector Matt Parish Katelin Chesna as Patsy Natassia Costa as Mary Rory Culkin as Johnny Parish Nate Dushku as Scott Washington Jodi Feder as Gina Chambers Paul Ghiringhelli as Victor Ramirez Kathryn Howell as Mrs. Boucher Marty Lindsey as Zodiac Killer Rex Linn as Jim Martinez Gilchrist Macquarrie as Teenage Boy George Maguire as Morgue Technician William Mapother as Dale Coverling Jarion Monroe as Doctor Molly Mulholland as Waitress Brian Napolitan as Greaser Kris Palm as Michael Randy Robertson as Police Officer Jessica Rofe as Nurse Luis Saguar as Sammy Karzoso Nick Scoggin as Gray Ian Scott McGregor as Paul Carmichael Carolyne Smith as Gail Lewinson David Tenenbaum as S.F. Police Officer Robin Tunney as Laura Parish Peter Van Schaik as Pete Morgan Brad William Henke as Bill Gregory
The cast of Zedj - 1971 includes: Melihate Ajeti Sabina Ajrula as Nikolina Darko Damevski as Ignat Vukan Dimevski Predrag Disljenkovic Aco Djorcev Nada Gesovska Aco Jovanovski as Marko Pance Kamdzik Dragi Kostovski as Viktor Petar Prlicko as Dedoto Neda Spasojevic as Katerina Snezana Stameska as Emica Pavle Vuisic as Trendafil
The cast of Murder East - Murder West - 1990 includes: Heather Canning as Frau Kolberg Clark Dunbar as Chauffeur Kevin Elyot as Fritz Kolberg Suzanna Hamilton as Regine Kleinschmidt Rose Hill as Granny Lloyd McGuire as Detlev Sam Miller as Christian Joanne Pearce as Andrea Wolf Alexandra Pigg as Carola David Prosser as Priest Roger Tebb as Vopo
The cast of Vani - 1943 includes: Pandharibai
The cast of Iskrokotoy - 1981 includes: Panchito
The cast of Premagni - 2001 includes: Ravichandran
The cast of Senathipati - 1996 includes: Satyaraj
The cast of Murder - 2012 includes: Carlitos Dosouto as Tony
The cast of Speaking Out - 2008 includes: Holly Hine
The cast of Murder Dawg - 2010 includes: Teddy Tutson as Murder Dawg
The cast of Speaking Without Speaking - 2007 includes: Svetlana Kimbrough
The cast of M.S. Murder - 1997 includes: Susann Uplegger
The cast of The Art of Murder - 2012 includes: Luigi Cozzi
The cast of Murder Story - 1958 includes: John Ewart
The cast of Murder in the Family - 1985 includes: Glynis Johns
The cast of Murder in the Dark - 1960 includes: Desmond Dhooge
The cast of Murder Ballads - 2014 includes: Armar Gonsalves as Huddie
The cast of Murder Monologue - 2008 includes: William Day as Actor
The cast of A Murder Mystery - 1995 includes: Peter Hesse Overgaard