An unputdownable new psychological horror and suspense novel from bestselling author Andrew Najberg!

The world fell to darkness while they were locked away. They survived.

The day Elissa and Tabitha's father came home from work brandishing a shotgun, the sisters found themselves locked in a secret fallout shelter beneath their home.

With no one else to teach them to survive and signs of the apocalypse occurring around them, the girls learn to navigate their new reality while facing a question that threatens to devastate everything they thought they understood . . . How did their father know to shut them in when he did?

When they finally emerge into the outside world, they find their neighborhood transformed: deserted buildings decay, rain corrodes and poisons, and mysterious, glowing beings the girls call shimmer people stalk the streets.

Uncertain who among the few remaining people they can trust, the girls set out on an odyssey across their city as Elissa feels a mysterious compulsion to lead her sister up the mountain on the edge of town.

Faced with horror of survival no child should ever have to imagine, join two final girls who must rely on each other to face a terrifying world that is no longer meant for them. From Andrew Najberg, the bestselling author of The Mobius Door.