It's said that this was Gregory Peck’s most cherished role, and he certainly delivers an impressive performance as Atticus Finch, the Southern lawyer who accepts the responsibility of defending a black man wrongly charged with rape. The narrative, adapted from Harper Lee’s well-regarded novel, is genuinely captivating on its own. There are numerous striking and recognizable moments throughout; among them are the intense courtroom scenes where Finch attempts to get the biased community to understand, and the fascinating subplot concerning his children's increasing interest in and connection with their unusual, reclusive neighbor who remains largely a mystery. This character, Arthur (Boo) Radley, is portrayed by Robert Duvall in what was his first film appearance. Should you watch it? Absolutely, I would suggest it to anyone who appreciates quality cinema.

Source on TMDB