save christi? not chris, said the prosecutor, but his daughter. >> she called 911. she helped him get the body out of the spa. she is the only one who did chest compressions. he had no interest in truly helping his wife. >> a matter of opinion, of course, but prosecutor strunsky poked around in chris hall's past as a policeman, and what did he find? >> this man had an uncanny ability to fabricate stories. >> seven years earlier, while hall was chief of police in cascade, idaho, he was charged and convicted of misuse of money, embezzled money, spent time in jail. a white collar crime, hardly murder. but what struck the prosecutor is that he says hall tried to cover it up. >> to plan a fraud, not just lie about it but lie about it effectively. >> i think it was very telling about who we were dealing with. >> suddenly the prosecutor's prospects were looking better. at the trial, he made lindsay patterson his star witness, of course. it was her story, after all,