reporters he d rather go to prison than resign, even passed the polygraph and was cleared in an internal sheriff s department investigation. so you wake up one morning and they say you re a criminal. well, it kind of was like that, but it was more of a long process. and i didn t do it. i just didn t. and it doesn t make any sense. reporter: kofoed blamed the stain on accidental contamination. somehow, he said, blood from the victim, wayne stock, ended up on that filter paper probably out at the murder scene and somehow the kit containing that same filter paper was what he later used on the car. but kofoed did admit he broke the rules, failed to log the evidence properly, even misdated the report. i did make a mistake. i didn t follow procedures. and that bothers me. and there s no way around that. that was wrong because i m a boss, because i m supposed to set the example. reporter: it is a little disconcerting, though.
kofoed pleaded not guilty to all charges, defiantly told reporters he d rather go to prison than resign, even passed the polygraph and was cleared in an internal sheriff s department investigation. so you wake up one morning and they say you re a criminal. well, it kind of was like that, but it was more of a long process. and i didn t do it. i just didn t. and it doesn t make any sense. reporter: kofoed blamed the stain on accidental contamination. somehow, he said, blood from the victim, wayne stock, ended up on that filter paper probably out at the murder scene and somehow the kit containing that same filter paper was what he later used on the car. but kofoed did admit he broke the rules, failed to log the evidence properly, even misdated the report. i did make a mistake. i didn t follow procedures. and that bothers me. and there s no way around that. that was wrong because i m a boss, because i m supposed to set the example. reporter: it is a little
to take a polygraph but again it wasn t what he hoped for. it showed sampson was deceptive when he denied being at wayne stock s home when wayne was shot. investigators seized on that to ratchet up the pressure. you were at the house when he was killed. no, i was not. your body is telling me otherwise. we need to get down to that. what s going on. i honest to do was not at the house when they were killed. investigators did not believe nick sampson. after all, matt livers says sampson was behind it and they planned it on their cell phones two days before the murder. so detectives were pretty sure matt livers was telling the truth and nick sampson was lying. you were there when he was
i promise you guys this. you know what? 17 years old and you have just thrown the rest of your life away. reporter: she tried to explain the words, changed her story again, confessed to firing one gunshot. then admitted something else quite shocking. that she had enjoyed it. okay. i ll tell you guys what i did like. i liked the adrenaline of it. i know you did it. i didn t like what caused the adrenaline rush. but i liked the adrenaline rush. reporter: that s a real shocker for you. you don t run into that in this little town too often. well, no. and you don t run into it with a young girl either. reporter: ballistics tests soon confirmed that the shell found in reid s cigarette box matched spent shells found at the murder scene. the murder weapon, stolen from the same wisconsin farmhouse where reid and fester stole the red pickup truck. blood found on reid s clothes and fester s shoes matched the victim, wayne stock.
was found just below the steering wheel on the dashboard. a stain found by csi chief himself. i just took it along that edge and wiped it. i figured that way i wouldn t miss anything and it reacted. you got a hit, though? i got a presumptive positive, yes. before long, tests confirmed what the csi chief found under the dashboard was indeed blood. the blood of wayne stock, the victim. only one way it could get there, carried by livers and sampson. with a confession and now real physical evidence to back it up, many in the community thought, case closed. oh, but they were mistaken. coming up, a piece of evidence that had gone unnoticed, turns the case upside down. is this the ring of truth?