- Raúl Castillo - Amos Garcia
- Rasool J'Han - Senator Spenser
- Nicholas Logan - Simons
- Mike Pniewski - Chief Albury
- Dave MacDonald - Older FBI Agent
- Patrick Fleming - Younger FBI Agent
- Jennifer Van Horn - Chair Senator
- Grace Junot - Senior FBI Agent
- Elizabeth Becka - Psychiatric Evaluator
- Chase Anderson - Nathan
- Isaiah Stratton - Evans
- Jon Levine - Administrator
- Greg Weeks - Apartment Owner
- Darin Toonder - FBI Boss
- Luke Davis - Alfie
- Brian Lafontaine - Senior FBI Officer #1
- Matthew Rimmer - Senior FBI Officer #2
- Lancer Dean Shull - Senior FBI Officer #3
- Tim Perez-Ross - Future FBI Agent #1
- Michael Lee Kimel - Future FBI Agent #2
- Cory Scott Allen - Doug
- Camry Brault - Rose Cole
- Sarafina King - Amanda Bennett
- Bryan McClure - Jesse Parker
- Briar Boggs - Henry Lee
- Ethan Hernandez - Fernando Flores
- Lee Osorio - Martin Rivera
- Nick Hagelin - Clarence Brown
- Nick DeKay - J. Moore
- Jefferson Cox - D. Allen
- Viviana Chavez - Agent Nunez
- Sage Kim Gray - Jessa May
- Mark Pellegrino - Mark Tupirik
- Benjamin Keepers - Tupirik Follower
- Casey Hendershot - Tupirik Shooter #2
- Mason Sharrow - Tupirik Shooter #3
- Alan Heckner - Billings Agent 1
- Mark Rowe - Billings FBI Second in Command
- Mitch Westphal - Billings Officer Bryant
- Aria Jennai Pulliam - Sara
- Michael Rubino - Senior FBI Figure
- Maggie Parto - Hour's Mom
- David Diaan - Hour's Dad
- Kurt Yue - Hour's Fiance
- Moses Das - Party Organizer
- Mike Wilson - Car Instructor
- Eric Esquer - Motel FBI Agent
- Collin Shephard - State Police Officer
- Micah Thompson - Viv Attacker 1
- John Nania - Viv Attacker 2
- Chris Gann - Lead Agent 1
- James Hutchinson - Lead Agent 2
- Carl Anthony Nespoli - Lead Agent 3
- Jonathan Palmer - Van Agent
- Daniel Norris - White Suspect
- Matt Burke - Quantico Polygraph Tester
- James Healy Jr. - Phoenix Polygraph Tester
- Britt Douyon - Supervisor 2
- Andrew Etzel - Ex-Marine Trainee
- Scott Oakley - Lead Construction Worker
- Thom Williams - Construction Worker 1
- Jason Kehler - Construction Worker 2
- Lindsay Ayliffe - FBI Director Shannon Fitzpatrick
- Dan Tracy - Warren
- Suzanne Jordan Roush - Tourist
- Max Bickelhaup - Local Cop
- Tia L. Davis - Gutierrez
- Sharayu Mahale - Tayo's Assistant
- James J. Fuertes - FBI Agent
- Jeremy Michael Grey - Hostage 1
- Toni Deckers - Hostage 2
- Allen Burns - Hostage 4
- Zuri James - Police Guard
- Michael Burgess - Minister
- Justin James Boykin - Rookie FBI Agent
- LisaGay Hamilton - Tayo's Mom
- Maurice P. Kerry - Senior Agent #2
- Ulisses Gonsalves - Bank Robber Actor #1
- Noshir Dalal - Pursuing Cop
- Christopher Thornton - James Row
- Rowan Joseph - Senior Lawyer
- R.C. Ormond - Creepy Intruder
- Michelle Davidson - Newscaster 1
- Shravan Amin - Lead Programmer
- Roxzane T. Mims - Judge
- Christina Bach - Interviewer
- Rick Perez - FBI Agent
- Adelle Drahos - Female Agent
- Roger Anthony - Photographer
- David Alexander - Newscaster #2
- Mallory Hoff - Cable Newscaster
- Keiko Bell - FBI Agent Supervisor (uncredited)
- Tatyana White - Memorial Visitor (uncredited)
- Tom Rob Smith
- Chase Paris
- Tara Feldstein Bennett
- Joe Robert Cole
- Brad Simpson
- Zanne Devine
- Will Bates
- Susan Jacobs
Mark Pellegrino hace el papel de Mark Tupirik.
Kate Mara hace el papel de Ashley Poet.
Brian Tyree Henry interpreta a Tayo Michaels en la serie.
Sepideh Moafi hace el papel de Hour Nazari.
Brian J. Smith hace el papel de Daniel Lennix.
Jon Jon Briones interpreta a Gabriel en la serie.
Brooke Smith hace el papel de Drew.
Rosalind Eleazar interpreta a Dr. Vivienne McMann en la serie.
Jake McDorman hace el papel de Murphy.
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