The sequel follows the agent as he races to save the world from the Entity, an evil AI that has taken control of every nuclear missile on the planet.

Christopher McQuarrie directed and wrote four consecutive films in the franchise, including this weekend’s “Mission: Impossible—The Final Reckoning.”

The best of the more minor action sequences in The Final Reckoning involves Grace and William Donloe’s wife exchanging fire with Russian special forces as they try to get the coordinates for the Seva...