All Callum wants is a break from the spirits who hound him for closure, especially a demon called The Shadow who's incessant presence has forced him to guard the veil separating the living and spirit worlds for weeks. All Zander needs is a fresh start in a new city after years of family drama and tragedy. When they find each other, they find everything they want and need-but Callum's supernatural reprieve has a price. And Zander's fresh start might be a death sentence.

Soon, Callum realizes he didn't escape The Shadow when he met Zander, just enticed it to find a new victim: Zander's little sister. To save her sister, and prevent The Shadow from gaining access to the living world, Callum is forced to tell Zander the truth he'd hoped to ignore: he's a medium, able to see and speak to spirits-and she's a cloak, a rare individual who unknowingly closes the veil between the living and spirit worlds.

It's no wonder Zander doesn't believe in ghosts-when she's around, it's like they don't exist. So how can Callum make her see the invisible spirit world that lives alongside the one she knows? And, more importantly, how can he make her understand she is the only thing preventing the evil stalking her sister from gaining unhindered access to the living world-the only thing standing between Callum and an endless, living hell?