Casts

• 

  Jake Gyllenhaal

  Robert Graysmith

• 

  Mark Ruffalo

  David Toschi

• 

  Anthony Edwards

  William Armstrong

• 

  Robert Downey Jr.

  Paul Avery

• 

  Chloë Sevigny

  Melanie

• 

  Elias Koteas

  Jack Mulanax

• 

  John Carroll Lynch

  Arthur Leigh Allen

• 

  Brian Cox

  Melvin Belli

• 

  Dermot Mulroney

  Martin Lee

• 

  Charles Fleischer

  Bob Vaughn

• 

  Zach Grenier

  Mel Nicolai

• 

  Philip Baker Hall

  Sherwood Morrill

• 

  James Le Gros

  George Bawart

• 

  Donal Logue

  Ken Narlow

• 

  Richmond Arquette

  Zodiac 1 / Zodiac 2

• 

  Bob Stephenson

  Zodiac 3

• 

  John Lacy

  Zodiac 4

• 

  Ed Setrakian

  Al Hyman

• 

  John Getz

  Templeton Peck

• 

  John Terry

  Charles Thieriot

• 

  Candy Clark

  Carol Fisher

• 

  June Diane Raphael

  Mrs. Toschi

• 

  Ciara Hughes

  Darlene Ferrin

• 

  Lee Norris

  Young Mike Mageau

• 

  Patrick Scott Lewis

  Bryan Hartnell

• 

  Pell James

  Cecilia Shepard

• 

  David Lee Smith

  Father

• 

  Jason Wiles

  Lab Tech Dagitz

• 

  Charles Schneider

  Cabbie / Paul Stine

• 

  James Carraway

  Shorty

• 

  Tom Verica

  Jim Dunbar

• 

  Jimmi Simpson

  Mike Mageau

• 

  Doan Ly

  Belli's Housekeeper

• 

  Karina Logue

  Woman

• 

  Joel Bissonnette

  Inspector Kracke

• 

  John Mahon

  Riverside Captain

• 

  Matt Winston

  John Allen

• 

  Jules Bruff

  Catherine Allen

• 

  John Ennis

  Terry Pascoe

• 

  J. Patrick McCormack

  Police Commissioner

• 

  Adam Goldberg

  Duffy Jennings

• 

  Clea DuVall

  Linda del Buono

• 

  Paul Schulze

  Sandy Panzarella

• 

  Adam Trese

  Detective #1

• Penny Wallace

  Mulanax's Secretary

• 

  John Hemphill

  Donald Cheney

• 

  Michel Francoeur

  Man on Marquee

• 

  Thomas Kopache

  Copy Editor #1

• 

  Barry Livingston

  Copy Editor #3

• 

  Christopher John Fields

  Copy Editor #4

• Jack Samson

  Young David Graysmith

• 

  Micah Sauers

  David Graysmith

• 

  Zachary Sauers

  Aaron Graysmith

• Jessica Baltutis

  Margot Graysmith

• 

  Peter Quartaroli

  Patrolman Fouke

• 

  Geoff Callan

  Patrolman Zelms

• Michael Hungerford

  Truck Driver

• 

  Anna Katarina

  Society Woman

• 

  E.P. McKnight

  Informant (Hall of Justice A)

• 

  Betty Murphy

  Informant

• 

  Jeff Daniel Phillips

  Informant

• 

  Shane Woodson

  Informant

• Cookie Crawford

  Informant #8

• 

  Cassius M. Willis

  Uniform Cop

• 

  Judith Drake

  Florence Douglas

• 

  Phoebe Holston

  Prison Guard

• 

  Marty Lodge

  Pinole Foreman

• 

  Cooper Thornton

  Internal Affairs Agent #1

• 

  Cazimir Milostan

  Internal Affairs Agent #2

• Charlotte Ferguson

  Kathleen Johns' baby

• Phoebe Ferguson

  Kathleen Johns' baby

• Kacey Malmsten

  Kathleen Johns' baby

• Karly Malmsten

  Kathleen Johns' baby

• 

  JD Cullum

  Director

• 

  Stanley B. Herman

  Staff Editor

• 

  Roy Lee Jones

  Distraught African American Male

• 

  Michael Rose

  Navy Project Leader

• 

  James Joseph O'Neil

  DOD Project Leader

• 

  Rod Damer

  FBI Codebreaker

• John Sarno

  Donald Harden

• Gloria Grant

  Bettye Harden

• 

  Brett Rickaby

  Detective Roy

• M.F. Bernier

  Detective #2

• Carter Evans

  Newscaster #2

• 

  Bill Seward

  TV News Anchor

• Dave Nemeth

  Newscaster #4

• 

  Ted Garcia

  Anchorman #1

• Greg Wolf

  Interviewer #1

• Barry LeBrock

  Reporter

• 

  Ione Skye

  Kathleen Johns (uncredited)

• David Winston Barge

  Vallejo Desk Ofiicer (uncredited)

• Hayati Akbas

  Hardware Store Customer (uncredited)

• 

  Brad Carr

  Camera Man (uncredited)

• Mitchell Fink

  Reporter (uncredited)

• Erica Ford

  Traveler (uncredited)

• Tish Hicks

  Informant (uncredited)

• 

  Danielle McKee

  Prisoner (uncredited)

• Derris Nile

  Office Worker (uncredited)

• Carmen Plumb

  Janie (uncredited)

• 

  Callie Thompson

  Child Witness (uncredited)

• 

  Bud Davis

  Patrolman (uncredited)