S07 · E21

John Wayne Gacy: A Monster in Disguise

Examine the horrifying double life of one of America’s most notorious serial killers, presenting his crimes through a factual, victim‑centered lens. The episode traces how Gacy cultivated an image of a friendly suburban contractor and community volunteer — even performing as “Pogo the Clown” — while secretly committing acts of devastating violence against young men and boys. Through interviews with investigators, neighbors, and surviving family members, Biography details the painstaking police work that uncovered the truth beneath Gacy’s façade, leading to the discovery of dozens of victims buried beneath his home. Archival footage and case records reveal how his charm masked deep cruelty, and how his arrest shocked the nation. The program offers a sober, unsettling portrait of a predator who hid in plain sight, emphasizing the enduring impact on victims’ families and the community he terrorized.