This book was okay. Of course I enjoyed reading about what Gacy did, but the majority of the book was how the police surveilled Gacy on a day-to-day basis. For over 150 pages, I read about high-speed chases between Gacy and the police, and the police's watch day and night. That disturbed me about this book. However, once Gacy was finally arrested, I got to read the gory details of Gacy's murders and of his trial. The last half of the book is what makes it worth reading. If you can push yourself through 150+ pages of nonsense, it's worth the read.