Kenny Waters (Sam Rockwell) was convicted of murder (killing Katharina Brow) in 1983. Betty Anne Waters (Hilary Swank) is determined to set her brother free by taking-up law, passing the bar and representing Kenny. There were 3 witnesses during the case: Sergeant Nancy Taylor (Melissa Leo) from the local police department, his ex-wife, Brenda (Clea DuVall), and his ex-girlfriend, Roseanna (Juliette Lewis). A touching true to life film about persistence, police corruption, lies, friendship, sacrifice and a tight sibling relationship. Screenplay was good with lines like: I hate the legal system, it's so inconvenient." and "You can't give-up." Rockwell and Swank drive the film, both equally impressive. The supporting cast was solid especially Driver and Lewis. Movie was interesting because you want to find out how it will end and at the same time you keep discovering new things. Except for the legal inaccuracies or temporal exaggerations and lack of a better score, Conviction is worth viewing because of some facts, heart/determination of Betty and its entertainment value, an underrated film which is re-watchable especially for those who have conflicts with your brother/sister or plain just innocent and in prison.