Claire’s father is one of the most notorious murder suspects in the country, though no one knows it. Nearly 30 years ago, while Claire and her brother slept upstairs, a brutal crime was committed in her family's townhouse. The next morning, her father's car was found abandoned near the English Channel, with bloodstains on the front seat. Her mother insisted she'd seen him in the house that night, but his powerful, privileged friends maintained his innocence. The first lord accused of murder in more than a century, he has been missing ever since. When the police tell Claire they've found him, her carefully calibrated existence begins to fracture.

When Nora takes the train from London to visit her sister in the countryside, she expects to find her waiting at the station, or at home cooking dinner. But when she walks into Rachel’s familiar house, what she finds is entirely different: Her sister has been the victim of a brutal murder. Stunned and adrift, Nora finds she can’t return to her former life. An unsolved assault in the past has shaken her faith in the police, and she can’t trust them to find her sister’s killer. Haunted by the murder and the secrets that surround it, Nora is under the harrow: distressed and in danger. As Nora’s fear turns to obsession, she becomes as unrecognizable as the sister her investigation uncovers.