sparks flew when katie beutler met army staff sergeant john blauvelt. he worked as an army recruiter in local high schools. she worked at a sandwich shop next to his office in fountain inn, south carolina. katie fell hard even after learning that john was married and had a child. >> she loved him so much and wanted to be a family with him and his young daughter. >> and katie made her dream come true. eventually marrying john. but mere weeks after the i do's trouble was already percolating when police say john blauvelt started throwing underage parties at his house. >> there were some minors in the house and some others that were 17 or older. >> it seemed john wasn't only recruiting for the u.s. army, he was recruiting for his own pleasure. and katie didn't like that. >> a lot of the kids that hannah was hanging around were hanging out at his house. >> one of the partygoers is 17 year old hannah thompson. her worried parents alert police that their daughter is spending a lot of time over at the blauvelt, by south carolina state law. >> she was an adult, t

and that's exactly what john blauvelt did. >> john takes a steak knife and she looks at him and she says, please let me go. if you let me go, i won't tell anyone. and he plunges it six inches deep into her throat. >> prosecutors say in the days before and after the murder, john googled how to sharpen a steak knife. and when can police get phone records? leaving the murder scene, he drove katie's car and met up with hannah. all caught on surveillance video taking a screwdriver and he is taking off the license plate, trying to remove any identifiable markers of that car belonging to katie blauvelt because he knows where katie really is. at this point in time, nabbing the killer was a long time in coming. detectives interviewed john blauvelt twice in the days following the murde, but just when police were ready to make their arrests, john was gone and so was hannah until he abandoned her and went awol for nearly six years, living under a false name, ben klein. marshals finally nabbed him in medford, oregon, in his new girlfriend's backyard. she had no idea she was living with a fugitive. >>