It was supposed to be just a game. Four girls. A circle of candles. One ancient name whispered into the dark. When fourteen year old Ava Callahan agreed to the sleepover ritual, she never believed it would work. But something heard them. Something answered. And now it lives inside her. At first, it hides. It smiles through her lips, speaks in her voice, wears her skin like a mask. But her mother sees the difference-the stillness in her eyes, the cruel things she says, the way animals won't go near her. Whatever is inside Ava isn't just pretending anymore. It's taking over. As her family begins to unravel, as friends turn into threats, as priests and doctors fail to help, Ava is pulled deeper into a waking nightmare of flies, fire, and voices. And the worst part? She doesn't want it to leave.