Mary, will I die?

"It starts innocently enough. Four kids --three girls, one boy--are at one of their houses, playing games. One of them has read about 'Bloody Mary' and the idea that if you look into a mirror and say her name thirteen times, she will show you the future. Some legends say she'll show you your one true love or a skull to mark your death within five years. Others say that conjuring Bloody Mary will bring her into your world"--Provided by publisher.