Spudvisor
Amy Ryan

Michelle McNamara's Words (voice) (7 episodes)

Patton Oswalt

Executive Producer (7 episodes)

Paul Haynes

Co-Executive Producer (7 episodes)

Larry Crompton

Self - Ret. Detective, Contra Costa County (5 episodes)

Melanie Barbeau

Self - Citizen Detective (5 episodes)

Paul Holes

Self - Ret. Chief of Forensics, Contra Costa County (4 episodes)

Karen Kilgariff

Self - Host, My Favorite Murder Podcast (4 episodes)

Billy Jensen

Co-Executive Producer (7 episodes)

Daniel Greenberg

Self - Michelle's Literary Agent (3 episodes)

Kathleen Conroy

Self - Michelle's Sister (2 episodes)

Mary Rita Skrine

Self - Michelle's Sister (2 episodes)

Maureen Stratton

Self - Michelle's Sister (2 episodes)

Bob McNamara

Self - Michelle's Brother (2 episodes)

Kera Bolonik

Self - Michelle's Friend, Writer (2 episodes)

Bonnie Colwell

Self - Joseph DeAngelo's Ex-Fiancée (2 episodes)

Adam Drucker

Self - Michelle's Friend (1 episode)

Jennifer Barth

Self - Executive Editor, HarperCollins (1 episode)

Barbara Rae-Venter

Self - Investigative Genetic Genealogist (1 episode)

Gillian Flynn

Self - Author, Gone Girl (1 episode)

Wes Ryland

Self - Joseph DeAngelo's Nephew (1 episode)

Gay Hardwick

Self - East Area Rapist Survivor (1 episode)

Bob Hardwick

Self - East Area Rapist Survivor (1 episode)

Anne Marie Schubert

Self - Sacramento District Attorney (1 episode)

Thien Ho

Self - Sacramento Deputy District Attorney (1 episode)

Chris Lombardo

Kathleen Lombardo's Brother (1 episode)

Tom Olis

Kathleen Lombardo's Neighbor (1 episode)

Kim Knebel

Kathleen Lombardo's Neighbor (1 episode)

Grace Puccetti

Self - Oak Park Attack Survivor (1 episode)

Kris Pedretti

Self - East Area Rapist Survivor (1 episode)

Linda O'Dell

Self - East Area Rapist Survivor (1 episode)

Jane Carson-Sandler

Self - East Area Rapist Survivor (1 episode)

Jennifer Carole

Self - Daughter of Murder Victim Lyman Smith (1 episode)

Debbi Domingo

Self - Daughter of Murder Victim Cheri Domingo (1 episode)

George Seibel

Self - Former Homicide Detective, Chicago Police Dept. (1 episode)

Lisa Ortiz

Self - Joseph DeAngelo's Cousin (1 episode)

Matt Brunson

Graphic Designer (7 episodes)

Susan Alegria

Production Design (7 episodes)

Amber Unkle

Production Design (7 episodes)

Thorsten Thielow

Director of Photography (7 episodes)

Myles Kane
Liz Garbus

Executive Producer (7 episodes)

Josh Koury
Cara Fitts

Archival Footage Research (7 episodes)

Julie Gaither

Supervising Producer (7 episodes)

Lisa Heller

Executive Producer (7 episodes)

Dave Rath

Executive Producer (7 episodes)

Nancy Abraham

Executive Producer (7 episodes)

Dan Cogan

Executive Producer (7 episodes)

Aimee Mann

Theme Song Performance (7 episodes)

Leonard Cohen

Main Title Theme Composer (7 episodes)

Heather Kreamer

Music Supervisor (7 episodes)

Philip Sheppard

Original Music Composer (7 episodes)