♪ pretty lights on the tree ♪ ♪ i'm watching them shine ♪ watch the full story at xfinity.com/sing2 >> reporter: it was early spring in kentucky when justice was done for the murder of trent digiuro. thanks, his friends knew, to a woman who faced up to fear and told her story. >> we've never met aimee and i'm eternally grateful-- >> absolutely. >> -- to aimee for everything that she's done for not only trent and his family, but for us. >> reporter: except there was an appeal. of course there was. standard procedure. but what happened was not standard at all. a court reversed the jury's decision. >> any comment, shane?