Directed by Emmy-nominated producer Rod Blackhurst (Amanda Knox, Welcome to Earth), this comprehensive six-part documentary series details the case that shook the world, drawing on a multi-hour death-row interview with Gacy himself, most of which has never been seen before, along with exclusive audio and video interviews. Almost fifty years since the crimes took place, new questions are emerging about what really happened, and who else may have played a part in the deaths of Gacy's 33 victims.

The docuseries has a 100% critics rating on Rotten Tomatoes, with AV Club saying, "John Wayne Gacy is dead, and Devil In Disguise is correct in that whatever is left to say about him isn't a horror story about an evil criminal mastermind, but a cautionary tale of a serial predator who went unpunished because he looked and acted like the men who were supposed to stop him."