Elizabeth Fischer

Rod Blackhurst

Self - Ret. News Anchor & Chief Correspondent

Jay Levine

Self - Ret. Des Plaines Police Detective

Rafael Tovar

Self - John Gacy's Sister

Karen Kuzma

Self - John Gacy Prison Correspondent

Craig Bowley

Self - Ret. Des Plaines Police Officer

David Hachmeister

Self - Ret. Des Plaines Police Officer

Michael Albrecht

Self - John Gacy's Former Friend

Ray Cornell

Self - John Szyc's Sister

Patti Szyc-Rich

Self - Gregory Godzik's Sister

Eugenia Godzik

Self - Former Gacy Employee

Anthony Antonucci

Self - John Szyc's Brother

Jim Szyc

Self - Jeffrey Rignall's Partner

Ron Wilder

Self - Gacy's Death Row Attorney

Karen Conti

Self - News Reporter & Anchor

Larry Potash

Self - Journalist

Alison True

Self - Ret. Chicago PD Homicide Detective

William Dorsch

Self - Fmr. Des Plaines Police Chief

Joseph Kozenczak

Self - Photographer

Marty Zielinski

Self - Former Gacy Employee

Mike Nelson

Self - Former Gacy Neighbor

Bruno Muczynski

Self - Sheriff of Cook County

Thomas J. Dart

Self - Cook County Sheriff's Office

Jason Moran

Self - Attorney

Steven W. Becker

Self - Fmr. Chief Prosecutor

William Kunkle

Self - Fmr. Prosecutor

Terry Sullivan

Self - Fmr. Prosecutor

Lawrence Finder

Self - Fmr. Prosecutor

David Dutton