Not since The Exorcist has there been such a powerful novel of demonic possession as Son of the Endless Night; perhaps never has there been a novel that so weds supernatural horror with human weakness as to make the two inextricably one. An apparently senseless slaying at a Vermont ski resort is revealed as the overture to a symphony of evil, in which a young man's mind and soul are held ransom by Zarach' Bal-Tagh, a millennia-old spirit. Zarach's object: a trial between the forces of darkness and light, to be held in a Vermont courtroom as part of a young man's murder trial. **