"Mystic River" is a 2003 crime drama film directed by Clint Eastwood, based on the novel by Dennis Lehane. The story follows three childhood friends—Jimmy Markum, Sean Devine, and Dave Boyle—whose lives are forever changed after a traumatic event. Years later, they reunite when Jimmy's daughter is murdered, leading to a complex investigation that reveals deep-seated secrets and emotional turmoil. The film explores themes of grief, guilt, and the impact of the past on the present. It features a strong cast, including Sean Penn, Tim Robbins, and Kevin Bacon, and received critical acclaim, winning two Academy Awards.