mr. lubahn, if you had murdered her, you would tell us today that you did?ink that statement is believable? >> i think so. >> i'm done. >> reporter: of course, believability was a question for the jury to decide. and decide they did. though, as you'll see, that wasn't the end of the story. not by a mile. >>> coming up -- a son overcome with emotion. a final push for the truth. >> please, for your family, for your kids, tell us what happened. >> and then, a final fateful twist. >> it just is the ultimate answer. this is it. maybe traveling for work sounds glamorous, but have you been on an airplane lately? oh. [ man ] man, this thing's got a lot of onions. it's good, though. i really wouldn't survive it without this scarf. it's like a little bit of home i can stuff in my bag. mmm. and i have tide plus febreze, which now gets it fresher for longer, so i can stay happy even when -- do you need a napkin? yeah. napkin! okay. oh! oh, my gosh. getting ripe in here, huh? whew! [ ding ] [ female announcer ] tide plus febreze. that's my tide plus. the boys in 2b threw

mr. lubahn's vehicle. >> and then he said he took her to the ocean, put her on a raft.a and dropped her down, a sundblock tied to h body. it was a shock, of course u a big shock. for so long the family or most of it believed mike and now in this very public way, they finally knew that carol was dead and he, their sweet mike killed her. but the whole truth, was it actually out there somewhere? and so on that cold and foggy january day, mike surrounded by cops and lawyers floated out into the mist to find carol and whatever was left. >> if they find the block in the ocean after the search, if they find that, that will give me half of the closure i need. >> she didn't get it because after the boat ride mike admitted his ocean tale was one more lie and perhaps it was finally for the sake of his son, the son who never abandoned him that he finally massed a polygraph and led investigators to the place he now says mike's mother has been all these many years. the police searched but couldn't find her remains and now after so much time, no one knows if they ever will. >> i don't