Superior exercises in action-movie formalism, the John Wick movies evoke everything from Fritz Lang’s silent thrillers (in their imagining of vast, underground criminal networks) to Gene Kelly’s musicals (in their inventive and breathless fight choreography) to Brian De Palma’s self-aware genre pastiches (in their allusions to high art and the way they veer close to parody). This third entry in the series picks up about an hour after the second one ended, when the international assassins’ guild placed a $14 million bounty on the head of Keanu Reeves’s unflappable killing machine. As in the film’s predecessors, the plot barely matters; it’s simply an excuse for director Chad Stahelski and company to stage one remarkable action set piece after another. Some of the more impressive ones take place in New York’s Chinatown, a Moroccan palace, and the lobby of a luxury hotel. With Halle Berry, Laurence Fishburne, Anjelica Huston, and Ian McShane.