The six-part John Wayne Gacy: Devil in Disguise, Peacock's first true-crime series, examines one of the world's most notorious serial killers, with all six episodes dropping on March 25. Peacock has also ordered Olympian Phelps' Michael Phelps: Medals, Memories & More, a three-part NBC Sports docuseries that takes a closer look at the most decorated Olympian of all time.
TOPICS: Michael Phelps, Peacock, John Wayne Gacy: Devil in Disguise, Michael Phelps: Medals, Memories & More, John Wayne Gacy, Documentaries, NBC Sports