 | Elijah Wood als Bill Hagmaier |
 | Luke Kirby als Ted Bundy |
 | Aleksa Palladino als Carolyn Lieberman |
 | Robert Patrick als Roger Depue |
 | W. Earl Brown als Warden Wilkenson |
 | Gilbert Owuor als Assistant Warden Paul Decker |
 | Christian Clemenson als Doctor James Dobson |
 | Hugo Armstrong als Colorado Investigator |
 | Nican Robinson als Utah Investigator |
 | Will Harris als Oregon Investigator |
 | Emily Berry als Idaho Investigator |
 | Steven Pritchard als Agent Montgomery |
 | Jarrett Sleeper als Assistant Warden McNeal |
 | Doug Cox als Minister Lawrence |
 | Tom Virtue als Agent Strauss |
 | John Wilcox als Agent Meyers |
 | Austin Uku als Agent Douglas |
 | Mac Brandt als Guard Paluger |
| Mona Lee Wylde als Psychiatrist |
| Jessica Lynn Skinner als Woman in Car |
| Kate Adams als Woman on Street |
 | David Salsa als Guard Flank |
| Richard Blackmon als Guard Simone |
| Allison Baver als Masha Tanner (uncredited) |
| Rachel Mysior als Victim (uncredited) |
| Kim Sherman | Producer |
| Amber Sealey | Director |
| Elijah Wood | Producer |
| Lisa Whalen | Producer |
| Bill Hagmaier | Executive Producer |
| Scott Derrickson | Executive Producer |
| Patrick Nelson Barnes | Editor |
| Danielle Aufiero | Casting |
| Amber Horn | Casting |
| Adrienne Garcia | Set Decoration |
| Emily Batson | Costume Design |
| Elisa Lleras | Unit Production Manager |
| Karina Silva | Director of Photography |
| Mazena Puksto | Makeup Department Head |
| Matthew Collorafice | Visual Effects Supervisor |
| Andrew Twite | Sound Effects Editor |
| Brent Kiser | Sound Re-Recording Mixer |
| Brent Kiser | Supervising Sound Editor |
| Allison Baver | Executive Producer |
| Stacy Jorgensen | Executive Producer |
| Pin-Chun Liu | Co-Producer |
| Elisa Lleras | Executive Producer |
| Lauren Magura | Executive Producer |
| Luke Watson | Executive Producer |
| Clarice Jensen | Original Music Composer |
| C. Robert Cargill | Writer |
| Michael Fitzgerald | Production Design |
| Lane Friedman | Hair Department Head |
| Ana Gabriela Quinonez | Key Makeup Artist |
| Gary Archer | Prosthetics |
| Mark Ward | Executive Producer |
