Jimmy. Dave. Sean. Friends who grew up in working-class Boston, they drift apart after a terrible tragedy. Years later, brutal events reconnect them. Jimmy’s 19-year-old daughter is coldly murdered. Dave is a suspect. And Sean, now a cop, scrambles to solve the crime before volatile Jimmy takes the law into his own hands. Working from Brian Helgeland’s adaptation of Dennis Lehane’s novel, director Clint Eastwood shapes a masterwork, a brooding thriller built on family, friends and innocence lost. The river has many depths. Let it wash over you.