Oliver Stone‘s 1991 political epic turns Jim Garrison’s re-investigation into a three-hour assault on the official record — sustained by its editing and by a rage that has not fully cooled.

New Orleans district attorney Jim Garrison becomes convinced that the Warren Commission’s finding — a lone gunman, a clean trajectory — cannot account for what happened in Dallas. His investigation, which Stone reconstructs from Garrison’s own memoir and other contested sources, spirals outward: a circle of men with ties to Lee Harvey Oswald, a shady New Orleans businessman named Clay Shaw, Mafia adjacencies, Cuban exile networks, and, in the film’s most audacious reach, forces within the American intelligence and military apparatus itself. The Clay Shaw trial, which Garrison lost decisively, becomes the film’s courtroom stage; Garrison’s closing address is Stone’s own indictment.

Kevin Costner plays Garrison as a civic missionary rather than a paranoid — calm, methodical, certain — and the restraint serves the film. Tommy Lee Jones is extraordinary as Clay Shaw: silky, slightly theatrical, radiating composed amusement at the proceedings against him. Gary Oldman appears briefly as Oswald, creating a complete and pathetic figure out of very little screen time. Donald Sutherland delivers the film’s most theatrical scene — a Washington park-bench monologue in which an unnamed general explains how military-industrial power supersedes the presidency — and Sissy Spacek holds the domestic perimeter as Garrison’s wife, a counterweight the film needs even when it does not know what to do with her.

Stone’s formal method is the film’s most coherent argument. He mixes archival Kennedy footage, black-and-white reconstructions, and color drama in sequences that disorient and then relock into place, mimicking the mental state of someone forcing a pattern out of fragments. The editing — by Joe Hutshing and Pietro Scalia, winners of the Academy Award — functions not as continuity but as epistemology: each cut that connects two images implies a connection between two facts. That is how Stone makes his case, cinematically rather than argumentatively.

John Williams’s score is less melodic than his blockbuster work — procedural, almost reluctant, with an elegiac undertow that keeps the film from celebrating its own drama. Costner’s Garrison never appears to enjoy his investigation, which is the right call: this is a portrait of a man absorbed into a cause rather than liberated by one. The result is a political thriller that asks more of its viewer than most, and usually gets it.

Garrison lost. Shaw was acquitted. JFK lives in the uncomfortable territory where a procedural defeat coexists with a cinematic victory. Whether the historical argument holds is a question the film deliberately leaves unanswered; that was never its actual subject. What it offers instead is a formal argument about what cinema can do with official silence — and three hours of evidence that Stone, at that moment, had mastered the form.