jonbenet's pediatrician refuted the theory of ongoing molestation. >> absolutely, categorically, no, i do not think she was sexually abused. >> the blood in the underpants was critical in another way. >> it did identify a dna profile. >> forensic testing identified an unknown male. the ramseys were not a match. yet detectives zeroed in on patsy ramsey. their speculation, she accidentally killed jonbenet and john helped cover it up, but what kind of accident would cause patsy to murder jonbenet? investigators had a theory. >> she had a bedwetting problem. a serious bedwetting problem that was ongoing for years. >> some believed frustration with jonbenet's bedwetting that night caused patsy to snap. or maybe it was something else that set patsy off. investigators focused on a