a.c. cowlings behind the wheel. >> this is a.c., i have o.j. in the car. he's still alive but he's got a gun to his head. >> reporter: a los angeles police detective tries to get simpson to turn himself in. >> throw the gun out the window, please, you're scaring everybody. >> i can't take this. >> yes, you can, don't do this. >> all i did was love nicole. all sdid wasi did was love her. >> what we have is a suicidal man, o.j. simpson. >> i had no idea at that time what was going on. >> reporter: kris jenner, ex-wife of robert kardashian, was close to both o.j. and nicole. >> it definitely sealed in everyone's mind who was watching that there's a possibility that, you know, this guy's going to kill himself. and he probably did it. returns to o.j.'s estate. a.c. cowlings, still in the car, desperately pleading with o.j. not to kill himself. >> don't do it, listen to me, his sen to me, o.j. no, no. >> reporter: eventually o.j. simpson relents and police take him into custody, arresting him on murder charges. >> the results of the analysis of that blood confir

a.c. cowling.he even mocks live television news reports. >> "prosecution team let the killer get away." >> reporter: for kim goldman, the sight of o.j. simpson as a free man is unbearable. one day, she is driving through a parking lot and stops when she sees him. >> i sat there and i revved the engine and i white-knuckled the steering wheel. and i thought, oh, my gosh, nobody's around, i could totally take him out. >> reporter: but instead of vengeance, the goldman family decides to seek justice, again, in of all places, another courtroom. they file a wrongful death lawsuit against simpson. in a surprise, they lay all their hopes on low-profile 42-year-old daniel petrocelli, a business attorney. this was not your area of expertise, wrongful death. >> i was not a criminal lawyer. >> reporter: this press conference is his first time speaking to reporters, ever. >> we think that, when all is said and done -- >> reporter: you describe having an anxiety attack. >> a full-scale anxiety attack. i couldn't

a.c. cowling but those were short-lived. the victims' families sued him for wrongful death in civil court. he's in the civil case. is it an annoyance? >> it's not just an annoyance. for the first time he has to temperature. in the criminal case you can say i'm not going to testify. in a civil case you don't have that right and that made the civil case totally different. >> reporter: now for the first time the long lost exclusive video unearthed by filmmakers to documentaries on a&e and lmn. >> these are just some of the deposition tapes that were recorded on as you can see vhs. >> reporter: dan spent days hammering at o.j.'s tumultuous relationship with nicole grilling him on the photographs of her bruised and battered face. >> you see those bruises on her face? >> no. >> you don't see anything? >> no. i mean i see this eye thing. >> you don't think this picture reflects any bruising or injuries or marks on nicole's face? >> no, i don't. >> what do you think this reflects. >> i think it reflects doing a movie we were doing a