When Camille Powers hits her head in a seemingly harmless fall, she finds herself in a strange world between life and death. Able to see but not interact with her regular life, she turns to the only friend she has left—Anna Grace, the spirit of a young girl Camille has seen around her since childhood. With Anna Grace's help, Camille learns she didn't just slip into this strange world but was dragged into it by a powerful centuries-old spirit that has been watching her for years, waiting for its chance to possess her body. Known as a Looker, the demon has a taste for the vices offered by our world and intends to indulge in all of them. If Camille can't find a way to save herself and Anna Grace from this haunting place soon, the demon will destroy her physical body, trapping her in the Peripheral forever.