For the last year, Holly and Brian have been out of sync. Neither can forget what happened that one winter evening; neither can forgive what’s happened since. Tonight, Holly and Brian race toward Pinebuck, New York, trying to outrun a blizzard on their way to the ski village getaway they hope will save their relationship. But soon they lose control of the car --- and then of themselves. Now Sheriff Kendra Book is getting calls about a couple in trouble --- along with reports of a brutal and mysterious creature rampaging through town, leaving a trail of crushed cars, wrecked buildings and mangled bodies in the snow. To Kendra, who lost another couple to the snow just seven weeks ago, the danger feels personal. But not as personal as it feels to Holly and Brian, who are starting to see the past, the present and themselves in a monstrous new light.

When Tom Orange rescues a mysterious young woman from a flooded river, he senses that their fates will deeply intertwine. At first, she claims to remember nothing, and rumor animates Root --- an isolated settlement deep in a strange wilderness. Benjamin Knox, the town doctor, attends to her recovery and learns her name is Molly. As the town inspects its young visitor, she encounters a world teeming with wonders and oddities. As dark forces encircle the town, the truth of Molly's past spills into the present.