strange things about this guy. he had several reports about him trying to pick up young girls. one of them was the daughter of another bus driver. >> and he would fill in for the regular driver on bonnie's bus route. and we just found out from strange things about this guy. he had several reports about him trying to pick up young girls. one of them was the daughter of another bus driver. i'm talking 14-year-old girls. >> reporter: oh, boy. >> he was a substitute teacher but got fired for some of the things he was saying in his classes. >> reporter: apropos of young girls. >> yes. and he left the area and moved down to california. >> reporter: the troopers went looking and found him in davis, california. >> we flew down there to try to talk to him. >> reporter: could this be him, the man who raped and murdered bonnie? could the hunt finally be over? they got his dna. >> it came back that he was the individual involved in bonnie's death or that he had sex with her. everybody was happy, everybody