dr. michael bodden, a world renowned forensic pathologist who investigated the deaths of john f.dy and john belushi and testified at the trial of o.j. simpson. he was about to turn up the heat on a cold case. >> dr. bodden reviewed the evidence and determined that it could not have been an accidental fall. >> reporter: in december of 2008, detectives paid one more visit to stephen. >> they wouldn't tell me what it was for. i had no idea what this was about. it make sense. >> reporter: 16 years after that fatal night on the cliff, police were back. and stephen was in for a shock. after all these years you thought it was done. >> not until they reached behind and handed me this thing. this arrest warrant. >> reporter: coming up, the case heads into court with a surprise from the stand. >> i'm here for my mother. >> reporter: stephen and jody's only son has some dark secrets to share. >> did you see the abuse? >> i did. (vo) more "doing chores for mom" per roll more "doing chores for dad" per roll more "earning something you love" per roll bounty is more absorbent, so the roll can l