The lives of the Barretts, a suburban New England family, are torn apart when fourteen-year-old Marjorie begins to display signs of acute schizophrenia. To her parents' despair, the doctors are unable to halt Marjorie's descent into madness. As their stable home devolves into a house of horrors, they reluctantly turn to a local Catholic priest for help, and soon find themselves the unwitting stars of The Possession, a hit reality television show.

Paul Tremblay is a Bram Stoker Award-winning author of the crime novels The Little Sleep and No Sleep Till Wonderland. He has served as the president of the board of directors of the Shirley Jackson Awards, and his essays and short fiction have appeared in the Los Angeles Times and numerous year's-best anthologies. He has a master's degree in mathematics and lives outside Boston with his wife and two children.