John Cleaver

John Wayne Cheever keeps his obsession with serial killers in check by a set of rigid rules that he lives by, hoping to the prevent himself from committing murder, but when a body turns up behind a laundromat, John must confront a danger outside himself.

Mr. Monster is a young adult horror novel by Dan Wells, published in 2010 by Tor Books and by Headline. It is the sequel to I Am Not A Serial Killer and the second book in the John Wayne Cleaver series. John Wayne Cleaver saved his town from a murderer even more appalling than the serial killers he obsessively studies. But it turns out even demons have friends, and the disappearance of one has brought another to Clayton County. No one in Clayton is safe unless John can vanquish two nightmarish adversaries: the unknown demon he must hunt and the inner demon he can never escape.