From New York Times bestelling author of Departure 37 comes a thriller with a supernatural twist, a reunion decades in the making and a nightmare waiting to return...

Is blood thicker than water? When a DNA test reveals that Ivy Pendleton has a sister she never knew existed, it feels like an unexpected gift, and a chance to reclaim a missing piece of her family's past. Anna Winterthorn seems eager to connect, and before long, they are exchanging calls, photos, stories, and plans for a long-awaited meeting.

But from the moment Anna Winterthorn enters the Pendletons’ lives, something feels wrong.

Long-buried secrets begin to stir. Strange dreams and unsettling coincidences cast new light on a tragedy from Ivy’s childhood: a disaster in the remote White Mountains that left her orphaned and haunted by memories she has spent a lifetime trying to explain away.

What started as a joyful discovery slowly transforms into something darker, drawing Ivy toward a truth that has been waiting decades to emerge.

A haunting tale of family, identity, and the dangers hidden inside the stories we tell ourselves, where the greatest threat may come from those who share our blood...