There is a right way and a wrong way to summon her? Jess had done the research. Success requires precision: a dark room, a mirror, a candle, salt, and four teenage girls. Each of them-Jess, Shauna, Kitty, and Anna-must link hands, follow the rules . . . and never let go. A thrilling fear spins around the room the first time Jess calls her name: "Bloody Mary. Bloody Mary. BLOODY MARY." A ripple of terror follows when a shadowy...