In a mining town in Ohio, a boy is invaded by an evil spirit living in a nearby silver mine. The spirit organizes a bloody massacre of the boy's neighborhood by characters from B-movies and Saturday morning TV cartoons which the boy regularly watches.

When Alan, a half-Navajo in touch with the spiritual mysticism of his ancestors, meets Aimee, a gifted psychic in his new high school, they realize they've had precognitive dreams of each other and that they must confront an evil spirit that has been responsible for mysterious deaths in the river in their small Maine town for hundreds of years and which is now haunting Alan's cousin Courtney.

Esta uses her affinity for time to give her an edge, and she's trained her whole life for one mission: travel back to 1902 New York, steal the ancient Book of Mysteries, and use its power to destroy the Brink and free the Mageus from the Order's control. But Seshat, an angry goddess was trapped within its pages. Now that terrible power lives within Harte, and if given the chance, Seshat will use Esta to destroy the world and take her revenge. Searching...

Presents arguments for and against the existence of those possessed and exorcisms.

Describes cases of spirit possession throughout history, the beliefs of various cultures around the world about possession, the characteristics of poltergeist possession and diabolical possession, the process of exorcism, and the arguments of skeptics.