Mayhem and violence are unleashed around the world when a pulse from a mysterious source transforms all cell phone users into homicidal maniacs, and only a small band of "normies" who avoided the technological attack can stop the rampage.

"The spectacular finale to the New York Times bestselling trilogy that began with Mr. Mercedes (winner of the Edgar Award) and Finders Keepers--In End of Watch, the diabolical "Mercedes Killer" drives his enemies to suicide, and if Bill Hodges and Holly Gibney don't figure out a way to stop him, they'll be victims themselves. In Room 217 of the Lakes Region Traumatic Brain Injury Clinic, something has awakened. Something evil. Brady Hartsfield, perpetrator...