the seat belt, i pulled the gun up and i fired and i shot her. >> but why? dawn said fred andros wanted revenge against susan for ending their affair. >> given fred's ego, nobody was going to say no to fred. nobody would break up with fred. >> but why did dawn silvernail do it? dawn says andros loaned her more than $15,000 over the 20 years they had known one another. instead of paying him back, andros asked her to murder susan to erase the debt. andros basically said she had no choice. >> he threatened my entire family and told me that if i wouldn't take care of this problem with susan for him that something would happen to something i love. >> to find out if dawn silvernail's version was true, investigators used a new true