Three sisters. Three keys. Three unspeakable horrors.

The Finch sisters once spent long, hot summers exploring the dozens of abandoned properties littering their dying town-until they found an impossible home with an endless hall of doors…and three keys left waiting for them. Curious, fearless, they stepped inside their chosen rooms, and experienced horrors they never dared speak of again.

Now, years later, youngest sister Claire has been discovered dead in that old, desiccated house. Haunted by their sister's suicide and the memories of a past they've struggled to forget, Meg and Esther find themselves at bitter odds. As they navigate the tensions of their brittle relationship, they draw unsettling lines between Claire's death, their own haunted memories, and a long-ago loss no one in their family has ever been able to face. With the house once again pulling them ever-closer, Meg and Esther must find the connection between their sister's death and the shadow that has chased them across the years…before the darkness claims them, too.