anissa was granted supervised release after nearly four years. >> this man, he's. >> he's this tall,eys on children. >> i was hired by the defense to evaluate morgan. i don't think she was deviously planning. i think she was feeling controlled by slenderman. what she would tell me is that she really had no choice but to listen to slenderman. >> the brutal, premeditated attack, they say, was done to please the fictional online character slenderman, who the kids hoped to meet at an imaginary mansion in the woods. >> she'd be anywhere from 6ft to 14ft tall. he doesn't have a face. >> didn't you feel bad that just stabbed one of your best friends? >> i thought about it, but then i decided that remorse will get me nowhere. it's easier to live without regrets. >> is the now grown adult behind those words truly reformed or still a risk to society? >> in a case like this, when someone is found not guilty by reason of mental defect, the question isn't whether morgan will be released. the question becomes when. >> it was may 2014 when the saga began in waukesha, a suburb of milwaukee. the thre