"Shocking, disturbing, and utterly original." --Paula Hawkins, #1 New York Times bestselling author "A truly incredible reading experience." --Lisa Jewell, #1 New York Times bestselling author The internationally bestselling author of Lying in Wait returns with a wickedly dark, twisted, and brilliantly observed new novel about an enigmatic woman confronting her unknown past.

Reclusive Sally Diamond causes outrage by trying to incinerate her dead father. Now she's the center of attention, not only from the hungry media and police detectives, but also a sinister voice from a past she does not remember. As she begins to discover the horrors of her early childhood, Sally steps into the world for the first time, making new friends, big decisions, and learning that people don't always mean what they say.

But who is the man observing Sally from the other side of the world, and why does he call her Mary? And why does her new neighbor seem to be obsessed with her? Sally's trust issues are about to be severely challenged in this "inventive, addictive, and bold" (Publishers Weekly, starred review) thriller.