Behind the shattered window of her bungalow, Brenda Ann Spencer is smiling. For once, Monday morning is turning out to be bearable: across the street, the bell rings at the Cleveland Elementary School… and she has a gun. At the crack of dawn, during a weekend in May 2007, experts are called to Peach Lane to investigate a bloody crime scene. The peaceful reputation of Manheim Township is about to take a lethal blow and the murderer is the least suspected.