Growing up, Mallory "Mouse" Dodge learned that the best way to survive was to say nothing. After she escaped her terrifying childhood and spent years being homeschooled by loving adoptive parents, she is starting her senior year at a public high school. The first day, she runs into Rider Stark, the friend and protector from her childhood, and Mallory realizes that their bond never really faded. But as Rider's life spirals out of control, Mallory faces...

Recounts the events that occur at the end of seventh grade, when a group of friends plan to trick Carlos, an annoying "problem" student who says he is visited by aliens, while they are on a field trip in the mountains of New Hampshire.

Narrated from several different perspectives, tells the story of the 1956 murder of two teenaged girls in suburban Baltimore, Maryland.