Cry_Wolf (2005)

Synopsis
A big lie told in fun has deadly consequences in this horror story. A group of students at an exclusive private school decide to have some fun by creating an urban legend and seeing how far it will spread. When a woman is murdered not far from the school's campus, the students create an elaborate mythology about a serial killer known as "the Wolf," whose motives and methods would make him a likely culprit for the recent crime. However, when other people begin dying at the hands of "the Wolf," the students are forced to admit to their lie in hopes of stopping the killings. But will anyone believe them? And how does the real-life killer know so much about the backstory of "the Wolf"? Cry_Wolf stars Julian Morris, Lindy Booth, Jon Bon Jovi, and Gary Cole. ~ Mark Deming, All Movie Guide