Tim Robbins plays a banker named Andy who is sent to Shawshank Prison on a murder charge, but as he gets to know a life-term prisoner named Red (Morgan Freeman), we soon realise his claims of innocence are credible. We also realise that Andy's calm, quiet exterior hides a great reserve of patience and fortitude, and Red comes to admire this mild-mannered man who first struck him as weak and unfit for prison life. So it is that The Shawshank Redemption builds considerable impact as a prison drama that defies the conventions of the genre (violence, brutality, riots) to illustrate its theme of faith, friendship and survival.