| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Adam McDaid | Crew | Camera | Director of Photography | 1 |
Alessandro Barnett | Crew | Editing | Editor | 2 |
 Rod Blackhurst | Crew | Directing | Director, Executive Producer | 6 |
Andy Berg | Crew | Production | Executive Producer | 2 |
Corey Gegner | Crew | Camera | Camera Operator | 2 |
Elizabeth Fischer | Crew | Production | Executive Producer | 2 |
Robert Patrick Stern | Crew | Camera | Additional Director of Photography | 2 |
Tyler Strickland | Crew | Sound | Original Music Composer | 6 |
Liz Cole | Crew | Production | Executive Producer | 2 |
Josh Fordham | Crew | Lighting | Gaffer | 2 |
Zebediah Smith | Crew | Camera | Director of Photography | 2 |
Trey Toy | Crew | Crew | Additional Music | 6 |
Oren Hadar | Crew | Sound | Scoring Mixer | 6 |
Adam McDonald | Crew | Camera | Director of Photography | 1 |
Christian Cashmir | Crew | Camera | Additional Director of Photography | 2 |
Andrew Cagle | Crew | Camera | Additional Director of Photography | 2 |
Oliver Lief | Crew | Editing | Editor | 2 |
Kevin Bryan | Crew | Camera | Drone Pilot | 1 |
Jon Koster | Crew | Editing | Additional Editor | 1 |
Patrick Jean-Joseph | Crew | Production | Associate Producer | 1 |
Lucas Groth | Crew | Editing | Lead Editor | 2 |
Jaclyn Spirer | Crew | Editing | Additional Editor | 1 |
Cliff Wilson | Crew | Editing | Editor | 2 |
Brian Boyd | Crew | Editing | Colorist | 6 |
Imani Dennison | Crew | Camera | Additional Director of Photography | 2 |
Ellie Zarr | Crew | Editing | Assistant Editor | 2 |
Jay Levine | Crew | Production | Production Consultant | 6 |
Christopher S. Johnson | Crew | Editing | Editor | 2 |
Ethan Mills | Crew | Camera | Director of Photography | 2 |
Christine Morris | Crew | Art | Art Direction | 6 |
Eleanor West | Crew | Production | Associate Producer | 2 |
Kimberley Ferdinando | Crew | Production | Co-Executive Producer | 6 |
Rich Cutler | Crew | Sound | Sound Re-Recording Mixer | 6 |
 John Wayne Gacy | Cast | Actor | Self (archive footage) | 6 |
Sam Amirante | Cast | Self - Gacy's Attorney (archive footage) | 1 | |
Robert K. Ressler | Cast | Actor | Self - Ret. FBI Profiler (archive footage) | 6 |
Jay Levine | Cast | Actor | Self - Ret. News Anchor & Chief Correspondent | 5 |
 Anthony Antonucci | Cast | Self - Former Gacy Employee | 2 | |
 Karen Kuzma | Cast | Actress | Self - John Gacy's Sister | 5 |
Ron Wilder | Cast | Self - Jeffrey Rignall's Partner | 2 | |
| Person | Type | Job | Role(s) | Episodes |
