dr. badden.had a totally different take on how jody scharf died. >> i would call this an accidental death. >> in wecht's version, which he demonstrated with, of all things, a teddy bear, jody fell off the cliff and onto jagged rocks just below, causing her mortal wounds. her body then catapulted. >> and out goes the body, and it it hurls into the air. >> into the tree canopy, which then carried her through the abyss and into that distant tree. >> this is what i think happened to explain those injuries of the chest and the head. >> but there was another bubble to burst in the prosecution's case. the motive for murder. stephen scharf wasn't a greedy killer, his attorney said. his client never made a claim on that insurance policy. it was only after the money was turned over to the state, years later, stephen scharf, that he even bothered to collect. >> would it throw fuel on the fire to not do it? wow, i know i look guilty, i am guilty so i better not make this claim. >> you're damned if you do and

dr. michael badden, a world-renowned forensic pathologist who investigated the deaths of john f.testified at the trial of o.j. simpson. he was about to turn up the heat on a very cold case. >> dr. michael badden has reviewed the evidence and has determined that this could not have been an accidental fall. >> in december of 2008, detectives paid one more visit to stephen scharf. >> they wouldn't tell me what it was for. i had no idea what this was about. i mean, it didn't make sense. >> sixteen years after that fatal night on the cliff, police were back and stephen scharf was in for a shock. after all these years, you thought it was done. >> not until they reach behind and hand me this thing, this arrest warrant. >>> coming up -- the case heads into court with a surprise from the stand. >> here for my mother. >> stephen and jody scharf's only son has some dark secrets to share. >> did you see that abuse? >> i did. woman: day care can be expensive. so to save some money, i found one that uses robots instead of real people. 'cuz robots work for free. robot 1:good morning... robot 1: