After teenager Robert Piest disappears on his mother's birthday, Des Plaines Police Department officers track, interrogate and tail the contractor Piest was last seen with -- John Wayne Gacy.

The media circus begins; Amirante questions whether defending Gacy is the right choice; the Piests cope with the reality of what Gacy did to Rob; Sam Stapleton and Randy Reffett navigate boyhood in Uptown.