- Adam G. Simon - Lt. Joe Gliniewicz
- Michelle Lane - Melodie Gliniewicz
- Matthew Dennis Lewis - D.J. Gliniewicz
- Deborah Dir - Belinda Markel
- Don Taylor Atkinson - Officer Stillwell
- Kevin Caliber - Police Officer
- Thomas Kim - CSI Tech
- Gregory DePetro - Graham Dwyer
- Andrew Sheffield - Officer Murphy
- Antonio Aaron - Dr. Jean-Claude Dominique
- Antonio Aaron - Officer John Smith
- Rob Steinberg - Officer Walsch
- Reed Imhoff - Police Officer
- Corinne Davies - Forensic Investigator Fitzgerald
- Jenna Osterlund - Britt Greineder
- Jamie Avera - Chief Terrence Cunningham
- Dean Simone - Detective Marty Foley
- Christopher Karl Johnson - K-9 Police Officer/Dog Handler
- Rene Michelle Aranda - Paramedic
- Raymond Vinsik Williams - Police Officer
- Ritchie Greer - Judge
- Emily Bader - Shannon Farris
- Lauren Elyse Buckley - Wilma Jenkins
- Holly Houk - Joylynn Martinez
- Jacob Cormier - Bill Fegan
- Jacob Cormier - Boston Cop
- Alva Loomis - Detective Richard Lewis
- Kendall Chappell - Michelle
- Kendall Chappell - Police Officer
- Bennet Viso - Ignacio Garraus
- Tara Bopp - Heather Garraus
- Brooklyn Robinson - Victoria
- Jennifer Fernandez - Co-worker
- Mark Schaefer - Duty Officer
- Charley Rossman - Bill Douglas
- Harvey B. Jackson - CO PD Officer Pfeifer
- Harvey B. Jackson - LAPD Officer Walker
- Christine Moon - Robin Benedict
- Andray Johnson - John Benedict
- Zary Alozian - Rhonda Benedict
- Sevda Levent - Jane Erikson
- George Stumpf - Detective Bill Dwyer
- Leilani Marie Smith - Eliette Dominique
- Leilani Marie Smith - Detective Jean Smith
- Vince Eustace - Lewis Jones
- Dean England - State Trooper Landry
- Christine Kent - Deputy
- Scott Parietti - Bill Leasure
- Lisa Renée - Nancy Sherwood
- Kayli Tran - Terri Chen
- Heather Dowling - Yvonne
- Heather Dowling - Virginia Uden
- Jeremy Gilbreath - Dennis France
- Norman Black - Art Smith
- Barbara Ann Duffy - Anne Smith
- Alex J. Joseph - Police Officer
- Alex J. Joseph - Ron Holtz
- Robert Sisko - Mike Dixiano
- Robert Sisko - Frank O'Hara
- Al LaFleur - Detective Westbrook
- Candice Moll - Maureen Bustamante
- Candice Moll - Jonelle Galuska
- Mercedes Young - Officer Young
- Mercedes Young - Female Officer
- Ashley Crary - Ann Marin
- Jenna Guercio - Magali Vergnet
- Colleen Elizabeth Miller - Sara Murphy
- Emma Pyne - Gemma Dwyer
- Thaddeus Shafer - Robert Howard Bruce
- Thaddeus Shafer - Eric Wright
- Joanne Atkinson - Shelia Hawkins
- Jeff Rector - Det. Sgt. Richard Laursen
- Kevin Young - Gerald Uden
- Madeleine Falk - Aunt Kim
- Madeleine Falk - May Greineder
- Tara Erickson - Alice Uden
- Phillip Abraham - Todd Scott
- Vic Stagliano - CBI Greg Sadler
- Vic Stagliano - Dr. Dirk Greineder
- Jamie Fishback - Deputy Larry Mathews
- Jess Matney - Deputy Rogers
- Robert Herrick - Ernie Scherer
- Eugene Nova - Detective Jones
- Eugene Nova - Aly Dominique
- Todd V. Carroll - Ernest Scherer
- Olivia Lemmon - Catherine Scherer
- Sarah Navratil - Adrian Solomon
- Desmond Hayes - Arlo Bonadies
- Desmond Hayes - Brad
- Desmond Hayes - Officer Patton
- Mark Weiler - Detective Scott Dudek
- Justin Bondy - Notary
- Justin Bondy - Robert Kuns
- Justin Bondy - Detective Gilmour
- Matt Fowler - Major David Shannon
- Erin Coker - Joan Shannon
- Dave Beaudrie - Nelson Crowe
- Dave Beaudrie - Chuck Hemp
- Ashford J. Thomas - Jeffrey Wilson
- Jessy Greer - Officer Faneal Godbold
- Sheldon Charron - Ken Nelson
- Sheldon Charron - Col. Ramsey
- Lauren L. Murray - Rickielee Pelo
- Aaron Segal - Scott Galuska
- Molly McIntyre - Shayla Pelo
- Andi Hester - Lindsay Lewis
- Rod Sweitzer - Detective Matthew Dick
- Mark Anthony Petrucelli - Detective Clay Wheeler
- Erica Ibsen - Kathi Spiars
- Lauren Gravitt - Shawna Garcia
- Nick Stellate - Lester Marks
- Ryan Coyle - Ronnie Marks
- Andrea Flowers - Melanie Wright
- Sam Schweikert - Gerard Schaefer
- John Curley - Detective John Huber
- Nicole Sterling - Teresa Schaefer
- Diego Lopez - Mark Lenner
- Diego Lopez - Nace Houchin
- Patricia Raven - Nancy Trotter
- Steven LaChioma - Spec. Agent Bob Luca
- Domenique Fragale - Paula Wells
- Micavrie Amaia - Georgia Jessup
- Shirley Dalmas - Angela Dixiano
- Amy Rachlin - Nancy Haverly
- Michael Worden - Sam Lee
- Tatiana Turan - Kelly Schittenhelm
- Jon Gormley - Larry Duran
- Mark Krenik - Alaska State Trooper Matthews
- Paul Anderson - Detective John Foraker
- Carrie Daniel - Dana Mackay
- Todd Christian Elliott - John Mackay
- Janna Jude Brown - Nicole Houchin
- Jennifer Lynn O'Hara - Heidi Teagle
- Michael Kunselman - Investigator Richard Pennycuff
- Joseph Kidawski - Dennis Bradford
- Kelton Jones - Spec. Agent Richard Rennison
- Laura Avnaim - Stephanie Bruner
- Andy Gates - Dale Bruner
- Brent Harvey - Dennis Calden
- Keaton Shyler - Jodie Eberhart
- Eric Strong - Sgt. Jeff Pelo
- Razor Rizzotti - Detective
- Alexana Thomas - Claire Martin
- Greg Francis
- Kevin Toms
- Korey Fowler
- Aundrea Posey
- Alicia Melton
- Mechelle Collins
- Joseph Martínez
- Louis Lopez
- Adisa Septuri
Craig Klein interpreta a Narrator (voice) en la serie.
Cheryl Arutt interpreta a Self (Clinical & Forensic Psychologist) en la serie.
Capítulo disponible en las siguientes plataformas:
