michael bodden, a world renowned forensic pathologist who investigated the deaths of john f.d 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. (burke) that's what we call a huge drag. seriously, that's what we call it. officially. and we covered it. talk to farmers. we know a thing or two because we've seen a th