Letters from an angel

San Francisco, late 1971. Quiet Marvin, a reclusive man in his early 40s, has been convicted of murder. He is sent to the infamous Alcatraz prison, where he ends up on death row awaiting execution. Unlike his fellow inmates, he hopelessly accepts the difficult situation, even though he knows that he is innocent. One day when he receives a mysterious letter from a young girl, he is very surprised. ...