In Peter Yates’s adaptation of George V. Higgins’s novel, Robert Mitchum is Eddie, an aging, Boston-area gunrunner facing a prison bid for a job gone awry and caught in a web of deals and double-crosses while grappling with whether to give up his former associates to the feds. Fully integrating himself within a stellar ensemble cast (featuring a brilliant array of character actors, including Peter Boyle, Richard Jordan, and Steven Keats) and blending into Yates’s finely created working-class atmosphere, Mitchum gives one of his career-best performances here, conjuring a blend of melancholy, spiritual exhaustion, and cloaked malevolence.