not in prison? and he said simply, the church protected me. >> reporter: the autopsy states that irene showed evidence of recent trauma, sexual intercourse, and trauma to the head. evidence of strangulation could not be found, but suffocation could have been carried out by placing a cloth over the mouth and nose, especially if irene was unconscious. the subject was dead when placed into the canal. >> i believe he killed her and i believed that then, i had no doubt about it because he said he did. >> reporter: you have no doubt that he killed irene garza? >> correct. >> reporter: but dale did not come forward with any of this until four decades later, when he said the guilt became too