Annemarie Lukas Bredahl has recently left her husband and moved into a small but cozy house in the lower middle-class city of Holly, Ohio. Alone except for her dog and scared of being on her own, she tries to adapt to her newly single life.

As if things couldn't get worse, she starts noticing items moving around on their own and the plumbing in her new place needs work. On a recommendation she calls Jackson Terry, a local plumber, and he proves to be the perfect distraction from her failing marriage.

Annemarie knows something isn't right with the house. Crosses appear and disappear on the walls. Her dog goes missing. She consults her long-time priest and although at first unwilling to personally help, he tells her that her house may be filled with souls trying to escape Hell by slipping through a hole in the dark layer-a layer between Heaven and Hell.

This is too much for Annemarie. She only wants a normal new life and new relationship with Jackson. Instead, she must learn why the dark souls slipping through want her and her alone to guide them to what any damned soul wants-salvation.