about betrayal, murder, and a coverup, and you're going to find out that the man who did this is john feitr: prosecutor mike garza is not part of irene garza's family, but the story of her 1960 murder has been part of the history of mcallen, texas, for generations. >> it's a legend about a girl that went to confession, you know, and never left. >> reporter: irene was accomplish and admired. she went to college, graduate school, and became a school teacher. swhenlt to church regularly, and that's where she was last seen. following a massive search, her body was discovered in a canal. she had been beaten, sexually assaulted, and suffocated. police had grown suspicious of the 27-year-old priest when he said a viewfinder found at the crime scene was his. feit also gave different accounts about that night and he had some injuries from the night irene disappeared. >> scratches that ran vertically down his hands on the top of his arms. >> reporter: despite the evidence, the case grew cold. years passed. there were rumors that some type of deal had been made between the church and authorities. but