served 15 years. evidence naming the real killer never provided to the defense. he was released when this tragic mistake was uncovered. victor thomas wrongfully convicted of rape, kidnapping and robbery, served 16 years. dna tests proved he wasn't the rapist. eugene horton, wrongfully convicted of sexual assault. dna tests led to him being overturned and we showed you steven brodie a minute ago. you can see more of his history on cnn.com/larryking. still with us, the stars of conviction and some real life hero as well. actress hilary swank, the woman she plays in the film, betty ann waters, director tony goldwym and attorney barry scheck, craig was canes, dallas county district attorney, what led you to hold on to this as opposed to other d.a.'s who didn't? >> well, you know, i was elected as a new d.a. in dallas county in 2006 and took office in 2007,