"Sam, could you do me a favor?" A seemingly simple request sparks the story that has now become part of America’s true crime hall of fame - the journey of a young lawyer, fresh from the Public Defender’s Office, whose first client in private practice turns out to be the most evil serial killer in our nation's history.
| Actor | Role |
|---|---|
| SSam AmiranteHimself | Himself |
 Jim BelushiNarrator | Narrator |
 John Wayne GacyArchive footage | Archive footage |