Killer Clown: The John Wayne Gacy Murders (Paperback)

Killer Clown: The John Wayne Gacy Murders By Terry Sullivan, Peter T. Maiken Cover Image
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“An unnerving true crime story of murder, terror, and justice.” —Dallas Morning News

Updated with the latest DNA findings and a new foreword by Gregg Olsen!

The definitive book on John Wayne Gacy, written by the prosecutor who spearheaded the investigation, arrest, and conviction of one of America's most horrific serial killers—now in trade paperback for the first time and with a new foreword by #1 New York Times bestselling author Gregg Olsen. fans of “Conversations with a Killer” will be able to get a peek inside the mind of a murder who had everyone fooled.

The Real Story Of John Wayne Gacy-- By The Man Who Helped Catch Him

He was a model citizen. A hospital volunteer. And one of the most sadistic serial killers of all time. But few people could see the cruel monster beneath the colorful clown makeup that John Gacy wore to entertain children in his Chicago suburb. Few could imagine what lay buried beneath his house of horrors—until a teenaged boy disappeared before Christmas in 1978, leading prosecutor Terry Sullivan on the greatest manhunt of his career.

Reconstructing the investigation—from records of violence in Gacy’s past and DNA evidence confirming the identities of additional victims, to the gruesome discovery of 29 corpses of abused boys in Gacy’s crawlspace and four others found in the nearby river—Sullivan’s shocking eyewitness account takes you where few true crime books ever go: inside the heart of a serial murder investigation and trial.

About the Author

Terry Sullivan served as a prosecutor for the State’s Attorney in spearheading the investigation and arrest of John Wayne Gacy, Jr., and was one of the key prosecutors at Gacy’s trial. He is the president of the Sullivan Firm, a law firm with offices in Rolling Meadow and Chicago, Illinois. As legal analyst for WGN-TV (Channel 9), Sullivan discusses evolving legal issues on breaking local, national and international matters. He has been quoted on many high profile cases from O. J.  Simpson to the William Balfour murder trial that involved the family of Jennifer Hudson. Visit him at

The late Peter T. Maiken was the retired arts editor for the Chicago Tribune and publications editor for the Beloit College in

Praise For…

Praise for Killer Clown

“An unnerving true crime story of murder, terror, and justice.” Dallas Morning News
"As with a good mystery story, to the very end of Killer Clown we find ourselves still rooting for good to triumph over evil, yet fearing the dice may be loaded the other way." Chicago Tribune

"Gripping study... for true-crime addicts." Publishers Weekly

"You will learn more in this book about the daily activities of a police department than you will from any number of Ed McBain novels or episodes of Hill Street Blues." The Charleston News & Courier

"For those who have nearly forgotten John Wayne Gacy--Killer Clown is a chilling reminder." Nashville Banner

Product Details
ISBN: 9780806542409
ISBN-10: 0806542403
Publisher: Citadel
Publication Date: June 27th, 2023
Pages: 432
Language: English