Kadro (20)
Terry SullivanSelf - Fmr. Prosecutor, Cook County, ILCraig BowleySelf - John Gacy Prison Correspondent
Jay LevineSelf - Ret. News Anchor & Chief CorrespondentJoseph KozenczakSelf - Fmr. Des Plaines Police ChiefDavid HachmeisterSelf - Ret. Des Plaines Police Officer
Anthony AntonucciSelf - Former Gacy EmployeeRafael TovarSelf - Ret. Des Plaines Police DetectiveLawrence FinderSelf - Fmr. Prosecutor, Cook County, ILMichael AlbrechtSelf - Ret. Des Plaines Police Officer
Karen KuzmaSelf - John Gacy's SisterDavid DuttonSelf - Fmr. Prosecutor, Black Hawk County, IAWilliam KunkleSelf - Fmr. Chief Prosecutor, Cook County, ILRay CornellSelf - John Gacy's Former FriendMarty ZielinskiSelf - PhotographerCarole LofgrenSelf (archive footage) (voice)Patti Szyc-RichSelf - John Szyc's SisterJim SzycSelf - John Szyc's BrotherEugenia GodzikSelf - Gregory Godzik's SisterRon WilderSelf - Jeffrey Rignall's PartnerSam AmiranteSelf - Gacy's Attorney (archive footage)