Roos Beckman has a spirit companion only she can see. Ruth—strange, corpse-like, and dead for centuries—is the light of Roos' life. That is, until the wealthy young widow Agnes Knoop visits one of Roos' backroom seances, and the two strike up a connection.

For Dr. Siena Dupont and her ambitious team, the Alpenglow glacier expedition is a career-defining opportunity. But 30 miles into the desolate Deadswitch Wilderness, they discover a missing hiker dangling from a tree, and their satellite phone fails to call out.

An alcoholic teacher and father’s world spirals out of control when a former student is killed and he is left with her dog and the dark presence that follows it. Matt Matheny teaches during the day, drinks at night, and barely hides his functioning alcoholism from his veterinarian ex-wife, Lucy, and his six-year-old son, Mikey. His world spirals out of control when a former student is killed, and he's left with her dog, Conehead. But something isn't right with Conehead.

In the summer of 1994, psychologist Daniel Hill buys a rustic farmhouse nestled in the rolling hills of West Virginia. Along with his wife and teenage daughter, the family uproots their lives in Ohio and moves south. They are initially seduced by the natural beauty of the country setting. That soon changes when they discover a hidden room in the basement with a well, boarded shut and adorned with crucifixes. Local legends about the previous owner being an exorcist come to light, but by then, all Hell has broken loose.

Hundreds of feet beneath the ocean's surface, a graveyard waits. Years ago, the SS Arcadia vanished without a trace during a routine voyage. Though a strange, garbled emergency message was broadcast, neither the ship nor any of its crew could be found. Sixty years later, its wreck has finally been discovered more than three hundred miles from its intended course: a silent graveyard deep beneath the ocean's surface, eagerly waiting for the first sign of life.