As he investigates the missing person report of a teenager, detective Kozenczak becomes concerned that local businessman John Wayne Gacy may be responsible for this. However, their evidence is viewed as being circumstantial.
After achieving two search warrants, Kozenczak finds a large amount of incriminating evidence, and later 29 bodies buried throughout John Gacy's property; the remaining four are found dumped in a nearby river, including Gant's remains.