Deep in the swamp lies a danger worse than death. From the author of The Darkness Greeted Her comes a nightmarish horror that explores the atmospheric Georgia swamplands, haunting nature of trauma, and frightening creatures lurking just beneath the water. 

Sixteen-year-old Madison blames herself after she couldn't save her best friend Sadie from drowning right in front of her. Wracked with grief and guilt, Madison is sent to spend the summer with her aunt in Georgia and hopefully do some healing.

But the dead won't leave Madison alone. Sadie's voice echoes impossibly down the halls of her aunt's ancient house, terrifying messages suddenly appear scrawled across Madison's mirror, and she finds threatening recordings on her phone…in her own voice. Madison doesn't want to believe that Sadie is haunting—even possessing—her, but when she finds herself losing chunks of time, she realizes she can't trust her own mind. 

Terrified, she confides in Wyatt, the boy next door. As they grow closer and explore the nearby swamp together, something ancient and evil calls to Madison from the murky water, luring her into the depths against her will. The more she loses control of her own body, the more it becomes clear that she is not just being haunted; she is being hunted. And if it's not Sadie, then it's something much worse. If Madison can't figure out how to stop it all, she'll not only be responsible for more deaths, but she'll lose herself completely.