In this inaugural episode of From Pillar to Killer, I examine one of the most notorious serial killers in American history: John Wayne Gacy.

Known to neighbors as a successful businessman, community volunteer, political activist, and children's entertainer, Gacy cultivated the image of a trusted pillar of his community. Behind that carefully constructed reputation, however, he was responsible for the murders of 33 young men and boys.

Through the lens of behavior analysis, this episode explores the patterns that defined Gacy's crimes, from his use of manipulation and the infamous "handcuff trick" to the behavioral chains, reinforcement histories, and missed opportunities for intervention that allowed his violence to escalate over time. Rather than focusing solely on the crimes themselves, I will examine the warning signs, environmental variables, and behavioral patterns that often go unnoticed until it's too late.

Most importantly, this episode remembers the victims, particularly Robert Piest, whose disappearance ultimately led investigators to uncover one of the largest serial murder cases in American history.

Content Warning: This episode contains discussions of child abuse, sexual assault, torture, murder, and crimes against minors.

Virtue. Vice. Violence.

"The real story doesn't belong to John Wayne Gacy. It belongs to his victims."

Research & Sources:

• Defending a Monster by Sam Amirante and Danny Broderick
• Encyclopaedia Britannica: John Wayne Gacy
• EBSCO Research Starters: John Wayne Gacy
• A&E: John Wayne Gacy's Childhood
• A&E: John Wayne Gacy's Capture and the Robert Piest Investigation
• TIME Magazine: The Real Serial Killer Who Inspired Devil in Disguise
• Wikipedia: John Wayne Gacy