Der Killerclown: John Wayne Gacy

Rod Blackhurst, Patrick Macmanus

Terry Sullivan (Self - Fmr. Prosecutor, Cook County, IL), William Kunkle (Self - Fmr. Chief Prosecutor, Cook County, IL), Jay Levine (Self - Ret. News Anchor & Chief Correspondent), Eugenia Godzik (Self - Gregory Godzik's Mother), Lawrence Finder (Self - Fmr. Prosecutor, Cook County, IL), Karen Kuzma (Self - John Gacy's Sister), Craig Bowley (Self - John Gacy Prison Correspondent), Karen Conti (Self - Gacy's Death Row Attorney), Jim Szyc (Self - John Szyc's Brother), Patti Szyc-Rich (Self - John Szyc's Sister)