The New York Times bestseller returns with an unsettling and riveting psychological thriller about a captivating woman who joins a family and threatens their picture-perfect lives.

Summer’s looking forward to a break from hustling for acting work in Manhattan when she, her husband Gabe, come to rural Pennsylvania for the annual family get-together at her in-laws’ sprawling estate. This year, Gabe’s baby brother Nick, has invited his new flame Hannah, who’s an actress as well. Summer immediately recognizes Hannah from a showcase they once did together, but strangely, Hannah claims not to know her. Something is off, yet Hannah charms the other family members, and Summer can only grit her teeth and smile when Nick announces his engagement to Hannah.

Then the reunion is rocked by tragedy when another family member is found dead, and the doctors attribute the loss to natural causes. As Summer investigates just what too-good-to-be-true Hannah might have done to keep her perfect image intact, she begins to fear that the first death may only be the beginning . . .