内容摘要：The Churchill River, left, empties into the Hudson Bay, right, Thursday, Aug. 8, 2024, near Churchill, Manitoba. (AP Photo/Joshua A. Bickel)

The Churchill River, left, empties into the Hudson Bay, right, Thursday, Aug. 8, 2024, near Churchill, Manitoba. (AP Photo/Joshua A. Bickel)

Tom Cruise in “Mission: Impossible - The Final Reckoning.” (Paramount Pictures via AP)Tom Cruise in “Mission: Impossible - The Final Reckoning.” (Paramount Pictures via AP)

“Final Reckoning,” Christopher McQuarrie’s fourth “Mission” movie in the director’s chair, does deliver two truly unforgettable sequences. One is in a long-defunct submarine at the bottom of the sea that will have you squirming; another involves two classic biplanes careening at 170 miles per hour (274 kilometers per hour) over lush South African landscapes. Though they may induce vertigo on IMAX, these are the things that make the trip to the theater worth it. But be warned: It takes a good long while of labored exposition, manic flashbacks and Oscar broadcast-ready greatest-hits montages to get there.McQuarrie, who co-wrote the script with Erik Jendresen, might have learned the wrong lessons from the past decade of overly interconnected franchise filmmaking. Or perhaps it still seemed like the right call when this two-part finale was put into motion seven years ago. Not only does realizing one previously enjoyable character is related to and motivated by a character from the past do little to raise the stakes, it also bogs everything down.Shea Whigham, Pom Klementieff and Greg Tarzan Davis in “Mission: Impossible - The Final Reckoning.” (Paramount Pictures via AP)

Shea Whigham, Pom Klementieff and Greg Tarzan Davis in “Mission: Impossible - The Final Reckoning.” (Paramount Pictures via AP)“Final Reckoning” also overstuffs the cast with faces that are almost distracting (like

as a U.S. Navy officer, though her American accent is quite good). Maybe it’s overcompensating for the movie’s flesh-and-bone villain Gabriel (Esai Morales), who seems to be there because Ethan needs someone to chase.

Pom Klementieff, Greg Tarzan Davis, Tom Cruise, Simon Pegg and Hayley Atwell in “Mission: Impossible - The Final Reckoning.” (Paramount Pictures via AP)A man walks by abandoned houses in Chanaute Market, Melamchi, northeast of Kathmandu, Nepal, Sunday, Sept. 15, 2024, damaged by floods in 2021. (AP Photo/Niranjan Shrestha)

A man walks by abandoned houses in Chanaute Market, Melamchi, northeast of Kathmandu, Nepal, Sunday, Sept. 15, 2024, damaged by floods in 2021. (AP Photo/Niranjan Shrestha)The sand-filled entrance of a house is visible in Chanaute Market, Melamchi, northeast of Kathmandu, Nepal, Sunday, Sept. 15, 2024, that was damaged by floods in 2021. (AP Photo/Niranjan Shrestha)

The sand-filled entrance of a house is visible in Chanaute Market, Melamchi, northeast of Kathmandu, Nepal, Sunday, Sept. 15, 2024, that was damaged by floods in 2021. (AP Photo/Niranjan Shrestha)Abandoned houses are visible in Chanaute Market, northeast of Kathmandu, Nepal, Sunday, Sept. 15, 2024. (AP Photo/Niranjan Shrestha)