S1·E6 – It Never Ends

John Wayne Gacy

Self (archive footage)

Robert K. Ressler

Self - Ret. FBI Profiler (archive footage)

Terry Sullivan

Self - Fmr. Prosecutor, Cook County, IL

Craig Bowley

Self - John Gacy Prison Correspondent

Karen Kuzma

Self - John Gacy's Sister

David Dutton

Self - Fmr. Prosecutor, Black Hawk County, IA

Ray Cornell

Self - John Gacy's Former Friend

Karen Conti

Self - Gacy's Death Row Attorney

Larry Potash

Self - News Reporter & Anchor

Alison True

Self - Journalist

William Dorsch

Self - Ret. Chicago PD Homicide Detective

Thomas J. Dart

Self - Sheriff of Cook County

Azriel Relph

Producer

Eleanor West

Associate Producer

Jaclyn Spirer

Additional Editor

Andrew Cagle

Additional Director of Photography

Ethan Mills

Director of Photography

Alessandro Barnett

Editor

Amanda Moore

Production Manager

Imani Nikyah Dennison

Additional Director of Photography

Cliff Wilson

Editor

Liz Cole

Executive Producer