doug mouser took his stepdaughter's death particularly hard. he had raised genna since she was 2 years old and treated her like his own. >> she truly did have a great relationship with him and loved him. and he loved her. he was very active in her life. >> in the search for genna's killer, investigators looked inside the mouser's home, but found no clues. >> everything was basically in its place, nothing knocked over or anything to indicate that genna was fighting and screaming as she went out the door. >> this raised the possibility that genna left home voluntarily. >> what the sheriff's department did was try and identify any boys she might have known or maybe boys she might have left the house with even if she was grounded, maybe she would get in a car with them and drive away. >> police were able to identify the two boys genna mentioned in her diary. both had alibis for the day of the murder. so police turned their attention to the whereabouts of genna's family members. genna's 18-year-old brother, geran, had a solid alibi. >> neighbors hav