A Head Full of Ghosts

A Head Full of Ghosts is a 2015 horror novel by American writer Paul Tremblay. The plot involves a Massachusetts family under financial and emotional strain while their fourteen-year-old daughter, Marjorie Barrett, exhibits signs of severe mental illness. The Barretts come to believe she is possessed by a demon, and her behavior is publicized when the family stars in a reality TV show. Marjorie's younger sister, Merry Barrett, relays the experiences of her childhood fifteen years later. Themes include elements of Catholic exorcism and reality television exploitation.