Robert Graysmith

David Toschi

William Armstrong

Paul Avery

Melanie

Jack Mulanax

Arthur Leigh Allen

Melvin Belli

Martin Lee

Bob Vaughn

Mel Nicolai

Sherwood Morrill

George Bawart

Ken Narlow

Zodiac 1 / Zodiac 2

Zodiac 3

Zodiac 4

Al Hyman

Templeton Peck

Charles Thieriot

Carol Fisher

Mrs. Toschi

Darlene Ferrin

Young Mike Mageau

Bryan Hartnell

Cecilia Shepard

Father

Lab Tech Dagitz

Cabbie / Paul Stine

Shorty

Jim Dunbar

Mike Mageau

Belli's Housekeeper

Woman

Inspector Kracke

Riverside Captain

John Allen

Catherine Allen

Terry Pascoe

Police Commissioner

Duffy Jennings

Linda del Buono

Sandy Panzarella

Detective #1

Mulanax's Secretary

Donald Cheney

Man on Marquee

Copy Editor #1

Copy Editor #3

Copy Editor #4

Young David Graysmith

David Graysmith

Aaron Graysmith

Margot Graysmith

Patrolman Fouke

Patrolman Zelms

Truck Driver

Society Woman

Informant (Hall of Justice A)

Informant

Informant

Informant

Informant #8

Uniform Cop

Florence Douglas

Prison Guard

Pinole Foreman

Internal Affairs Agent #1

Internal Affairs Agent #2

Kathleen Johns' baby

Kathleen Johns' baby

Kathleen Johns' baby

Kathleen Johns' baby

Director

Staff Editor

Distraught African American Male

Navy Project Leader

DOD Project Leader

FBI Codebreaker

Donald Harden

Bettye Harden

Detective Roy

Detective #2

Newscaster #2

TV News Anchor

Newscaster #4

Anchorman #1

Interviewer #1

Reporter

Kathleen Johns (uncredited)

Vallejo Desk Ofiicer (uncredited)

Hardware Store Customer (uncredited)

Camera Man (uncredited)

Reporter (uncredited)

Traveler (uncredited)

Informant (uncredited)

Prisoner (uncredited)

Office Worker (uncredited)

Janie (uncredited)

Child Witness (uncredited)

Patrolman (uncredited)