A new spine-tingling thriller from the author of The New Neighbors that takes place over the course of a therapy session, in which neither patient nor therapist are who they claim to be.

Two liars. One room. No way out.

Susanna Fenton has a secret. Fourteen years ago she left her identity behind, reinventing herself as a therapist and starting a new life. It was the only way to keep her daughter safe.

But when a young man, Adam Geraghty, walks into her office, claiming he needs Susanna's help but asking unsettling questions, she begins to fear that her secret has been discovered.

Who is Adam, really? What does he intend to do to Susanna?

And what has he done to her daughter?