SZEREPLőK
Terry Sullivan
Self - Fmr. Prosecutor, Cook County, IL- Philip Hersh
Audio Description Narrator - Jay Levine
Self - Ret. News Anchor & Chief Correspondent - Lawrence Finder
Self - Fmr. Prosecutor, Cook County, IL - Karen Kuzma
Self - John Wayne Gacy's Sister - Craig Bowley
Self - John Wayne Gacy Prison Correspondent - William Kunkle
Self - Fmr. Chief Prosecutor, Cook County, IL - Dave Hachmeister
Self - Ret. Des Plaines Police Officer - Rafael Tovar
Self - Ret. Des Plaines Police Detective - Eugenia Godzik
Self - Gregory Godzik's Sister - Mike Albrecht
Self - Ret. Des Plaines Police Officer - Patti Szyc-Rich
Self - John Szyc's Sister - Jim Szyc
Self - John Szyc's Brother - Ray Cornell
Self - John Wayne Gacy's Former Friend - David Dutton
Self - Fmr. Prosecutor, Black Hawk County, IA - Anthony Antonucci
Self - Former John Wayne Gacy Employee - Larry Potash
Self - News Reporter & Anchor - Alison True
Self - Journalist - Karen Conti
Self - John Wayne Gacy's Death Row Attorney - Ron Wilder
Self - Jeffrey Rignall's Partner - William Dorsch
Self - Ret. Chicago PD Homicide Detective - Tom Dart
Self - Sheriff of Cook County - Jason Moran
Self - Cook County Sheriff's Office - Joseph Kozenczak
Self - Fmr. Des Plaines Police Chief - Steven Becker
Self - Attorney - Marty Zielinski
Self - Photographer - Mike Nelson
Self - Former John Wayne Gacy Employee - Bruno Muczynski
Self - Former John Wayne Gacy Neighbor
A bárányok hallgatnak 
A mi kis falunk 
Képlet