Devil in Disguise has received praise for the care that went into centering the show around John Wayne Gacy's victims while also clarifying misinformation about the notorious serial killer. During an exclusive interview with Us Weekly, Michael Chernus broke down his process of bringing Gacy to life, saying, "The research was as extensive as you'd imagine with something like this. There was so much material available - from books to documentaries to podcasts to YouTube videos.