From Netflix's Monster to Hulu's The Twisted Tale of Amanda Knox, scripted true crime shows are all the craze - so it may be a surprise to viewers that Peacock's Devil in Disguise: John Wayne Gacy chose not to show any murders on screen. Gacy was a serial killer and sex offender who raped, tortured and murdered dozens of young men and boys. After he was convicted of 32 murders, he was sentenced to death and died by lethal injection in 1994.