Shadows lurk in the darkness, preying on hundreds of women—women who have one hidden thing in common.

A young woman witnesses the unsettling disappearance of her high school principal and soon finds herself facing a harrowing decision.

Two friends find themselves facing a power that threatens not only their lives, but the lives of thousands more. One is fighting her own shadows from past decisions. The other is followed by a lurking adversary who nearly killed her five years before. She begins to connect a series of events, and a frightening realization comes to light: they face a power that cannot be fought with guns or weapons. Will they find the answers, and the strength, to cast away the grip of a hostile presence that only wants them dead?