at pam kinamore's autopsy pathologists found biological evidence that she had been sexually assaulted, and it also contained the dna profile of her killer. naturally, investigators wanted to know if this perpetrator had been apprehended before. >> we had already taken his dna profile and searched it into the fbi's codis database, which was a national database of offenders as well as evidence from other cases, and we knew then at that point that he had not been linked to any other crimes. >> but this dna evidence did tell police something important. the same man who killed pam kinamore killed two other women several months earlier. >> i had never had experience with a serial killer, you know, other than seeing it in tv shows. so all of a sudden, this was something that baton rouge