Craig Bowley (Self - John Gacy Prison Correspondent), Jay Levine (Self - Ret. News Anchor & Chief Correspondent), Joseph Kozenczak (Self - Fmr. Des Plaines Police Chief), Dave Hachmeister (Self - Ret. Des Plaines Police Officer), Anthony Antonucci (Self - Former Gacy Employee), Rafael Tovar (Self - Ret. Des Plaines Police Detective), Lawrence Finder (Self - Fmr. Prosecutor, Cook County, IL), Terry Sullivan (Self - Fmr. Prosecutor, Cook County, IL), Mike Albrecht (Self - Ret. Des Plaines Police Officer), Philip Hersh (Audio Description Narrator)