''MAGNIFICENT'' Alan Moore''I COULDN''T PUT THE BOOK DOWN'' Ron Howard''CHILLING AND UTTERLY IMMERSIVE'' M. R. Carey It was no secret that journalist Jack Sparks had been researching the occult for his new book. No stranger to controversy, he''d already triggered a furious Twitter storm by mocking an exorcism he witnessed.Then there was that video: forty seconds of chilling footage that Jack repeatedly claimed was not of his making, yet was posted from his own YouTube account.Nobody knew what happened to Jack in the days that followed - until now ''Fascinating, hilarious, disturbing, exciting and surprising as hell'' Ron Howard, director of Apollo 13, A Beautiful Mind and The Da Vinci Code''Brilliantly paced, utterly compelling, I didn''t have *a clue* what would happen'' Toby Whithouse''Super spooky and addictively written'' Heat''We fell hard for Jason Arnopp''s whip-smart and impulsive thriller . . meet your new favourite book'' iBooks Store''Wittier than the lovechild of Stephen Fr