John Wayne Gacy, Jr., was a serial killer and rapist who terrorised Chicago in the 1970s. He was charged and convicted for the assault and murder of at 33 young men from 1972 to 1978, with his favorite method of killing was through asphyxiation.

When he killed his victims, he sometimes dressed as the character 'Pogo the Clown', leading to some of the media referring to him as 'the killer clown'.

Most of his victims were raped, tortured, and later killed inside Gacy's home, and their remains buried in a crawl space below the house. Once there was no more space in his house for the victims, he resorted to disposing of their bodies in the Des Plaines river.

The Serial Killers series lifts the lid on some of the world's most notorious serial killers and criminals. The narrative outlines the crimes of the killer, exploring the motives and impulses which led the perpetrator to commit their crimes.

There are a total of 12 books in the Serial Killers series, with multi-book bundles comprising four books offering the best value for money.