>> but this profile was so weak, it would be inadmissible in court. >> it was a partial match, which told law enforcement and told me we were on the right track. we just needed to get a good dna sample from drew planten. >> since planten worked for the state, investigators got permission to search his workplace. mark bodet swabbed his computer keyboard, his radio and other items he handled. dna from those skin cells was compared to the biological evidence from stephanie bennett's rape kit. >> the dna that was obtained was an exact match to the profile from the dna that was obtained from the sperm sample from the vaginal swabs. >> investigators believe this dna evidence placed planten at the scene on the night of stephanie's murder.