starbuck children, their father was essentially a victim of a kind of marital profiling. a suspect simply because husbands and ex-husbands of murder victims are always suspects. if not for that bias, they said, the investigators would have found the real murderer. >> the evidence is shoddy. >> reporter: and there's so many other possible suspects, they say. take this theory of blake's. not long after clay's arrest, there were news reports about a man named israel keys. he was arrested for murdering a young coffee barrista in alaska and later admitted he'd killed many more people, some in washington state. a serial killer whose family hailed from, of all places, a town just a few miles from chanin's house. well, why would you think it was israel keys? >> because he has killed over ten women. he admitted to four in washington. he was arrested a month about after my dad, so he wouldn't have been on the radar until