In Reasonable Doubt, you'll judge Jax Stewart for her questionable ethics and wild interpretations of the law until you're the one in trouble. Then you'll see her for what she is: the most brilliant and fearless defense attorney in Los Angeles who bucks the justice system at every chance she gets.

迈克尔（希里安•墨菲 Cillian Murphy 饰）是一个不学无术，整天游手好闲的青年，他欠了达伦（布莱丹•格里森 Brendan Gleeson 饰）一大笔钱无力偿还，糟糕的是，达伦是当地最臭名昭著的黑帮头头。布兰达（茱蒂•惠特克 Jodie Whittaker 饰）是迈克尔的朋友，在一场意外中，她误杀了达伦手下的一个小喽啰，巧合的是，迈克尔的父亲吉姆（吉姆•布劳德本特 Jim Broadbent 饰）刚好出现在凶杀现场，成为了目击证人，三人为了躲避达伦的追杀不得不踏上了逃亡的旅途。