because that -- i was like, women don't usually change tires when a man is around.vestigator charlie mccormick couldn't see any good reason for lynn to get under a jeep held up by . >> you'd have to be a fool under those circumstances, and from all the other interviews that no fool to already were insecure about. >> reporter: mccormick believes the original investigation was incomplete.t of things that could have been looked at that would be easier to look at then than now.r example, what caused the jeep to fall? harold said he thought it happened when he tossed the tire into the trunk. but this p print on the front right fender. >> i would've jumped all over that footprint. that have been analyzed, e shoes that everybody had on that was at the scene, whether it be harold henthorn or his wife or fire nybody. >> reporter: but no one did. and no one ever checked the jack harold said wasn't working to see if it was really broken.cked with the restaurant that the henthorns were either heading to or coming from, depending on which version of harold's story, if any, was employees to see if they that

it was declared an accident and forgotten for nearly 20 years. >> reporter: detective charlie mccormick thinks the reason for that was the coroner's quick ruling that lynn's death was accidental. >> if you're a policeman and you're trying to investigate a crime and all of a sudden the coroner, who really has an accident, you're a little bit cut off at the pass. two days after a death like this, to call it an accident, it's unfortunate. all the facts would indicate that this was, i think, a rush to judgment. >> reporter: the former coroner says there was no rush to judgment. he didn't remember the case, but reread the coroner's report at "dateline's" request and says, quote, hindsight is a wonderful ing, but at the time everything fit. there were no suspicions raised and no reason to drag our feet. nevertheless, after toni's death and mccormick's review, the douglas county coroner chansed the manner of lynn's death from accidental to undetermined. still, harold henthorn hadn't been charged with anything not in toni's death or his first wife lynn's? so sheriff's detectives called on lynn'

ruled lynn's death an accident hired private investigator and former denver homide detective charlie mccormick to review the case file. he noticed something about harold right away. >> on face value, he's inconsistent. and that's never a good sign. >> reporter: for starters, harold told multiple stories about why he and lynn were on that back road in the first place. >> this guy was all over the map you know, we're going to dinner. be had been at dinner. we left the house at 3:00. we left the house at 6:00. >> reporter: in the police reports written in the hours and days after lynn died, harold is quoted giving different reasons as to why exactly they pulled over. >> he contradicted himself on what the tire problem was. was it a flat? was it spongy? was it soft? what caused this to happen? >>>>eporter: whatever shape the tire was in, the henthorns apparently tried to change it using jacks that normally used for a boat because harold told the cops the jack that came with the jeep was broken. >> he couldn't get it to work. and he even said that he sprayed some oil or solvene on it to try to get