he was not aggressive or violent. normal just like us. >> martha: we have a forensic profiler to shed light on what might have happened here. dale, thank you for being here. how does someone with no prior escalate so quickly to this kind of behavior? >> first of all, we don't know what his behavior has been. it just means there has never been an investigation or arrest. just because someone hasn't been -- you know this. someone hasn't been arrested doesn't pine they haven't been involved in bad behavior. obviously from the evidence, it is clear he was stalking her at some point because the car was seen around the home where she was staying. so ultimately, you know, i think the evidence clearly shows he went to try to interact with her. as a young male would.