I hadn’t seen a good Cold War spy thriller in a while, so I was interested in viewing “The Courier” (2021). It trundles pithily down a familiar, based-on-a-true-story path, with little, tiny spy cameras and Benedict Cumberbatch as a salesman recruited to serve as the West’s go-between to a Soviet colonel concerned about Khrushchev. Then comes the Cuban Missile Crisis and things take a dark turn, with KGB agents, dark prison cells, and Cumberbatch looking wan on the Capital A Acting diet. It’s not bad, just jarring. Spoiler alert: We all didn’t die in a nuclear holocaust 60 years ago.