When a teenage boy is branded with a glowing spiral that burns through his soul, the Circle uncovers an entity named Malachar—an ancient force using mirrors, shadows, and corrupted glyphs to invade reality itself. As spirals ignite across the city and reflections begin moving on their own, the team races to stop a living pattern that learns from every attack against it. But Malachar does not want a doorway. It wants a vessel—and the Circle is running out of time to stop the choosing.