sarah dutra was behind bars, charged with the murder of larry mcnabney. bars, charged with the murder of larry mcnabney. larry's wife, lisa, told detectives they had killed mcnabney together, but insisted it was sarah's idea. then elisa committed suicide, leaving sarah to face trial alone. her defense claimed she was a pond, forced to commit a horrendous act, and it was lisa who was the real mastermind. which story with the jury believe? here's keith morrison with the conclusion of poison. >> it was the winter of 2003. more than a year after larry mcnabney was poisoned with horse tranquilizer. his admitted killer, his wife, elisa mcnabney, chose her own destiny . and her alleged accomplice, alone, faced the possibility of spending the rest of her life behind bars. >> you attended the trial every day. >> yes, 11 1/2 weeks. >> why? >> the d.a. had told us the importance of our family being represented, our dad not forgotten. >> she believed her father had died at the hands of both elisa and spat sarah. and while sarah admitted to being there when larry died