I saw this movie in late 70's. Three boys rapes a girl leaving a party and leave her for dead. They make a pact never to talk about it again. They go on with their separate lives filled with bad luck. One ends up in prison. His image on prison wall looks like Jesus' face. He becomes a very rich/powerful evangelist. The girl ends up singing in his church. The most beautiful rendition of Amazing Grace I have ever heard. That's all I can remember. I think it was Part 1 and 2, maybe 3.
