This is Anissa Weier, a 12-year-old girl from Waukesha, Wisconsin, who joined one of her friends to stab another, just to appease a fictional horror character - slenderman. And even though she felt remorse almost instantly in the interrogation, she will give us a darker side of the web, where fictional characters and stories compel readers to do the absolute worst. In this video, we’re taking you through the case of Anissa Weier and how she got involved in a possible murder case.