hiking and snapchatting by this bridge in delphi, indiana. police today also unveiling a new, younger-looking sketch of the suspect between 18 and 40. investigators believe he has ties to the area. an emotional today addressing the killer -- >> directly, to the killer, who may be in this room. we believe you are hiding in plain sight. we know that this is about power to you. and you want to know what we know -- and one day, you will. >> reporter: investigators also releasing more of that chilling recording from libby's phone believed to be the killer's voice. >> guys, down the hill. guys, down the hill. >> reporter: tonight, this community on edge. >> it's frustrating. it's scary, because this person is still walking free. >> this has been a two-year ordeal for that community. alex joins us live tonight from