Red Joan (2019)

I just saw Judi Dench play Shakespeare's wife, and here she is in this movie playing an aged British spy.  Some women have all the luck.
The movie alternates between the war and the turn of the 21st century.  She lives a quiet life in a British suburb and tends to the cookie-cutter demands of her uneventful days in the present. Except, this simple old woman (whose story is based on the real-life case of Southeast London’s Melita Norwood) doesn’t seem to be all that ordinary—soon enough, the British Secret Service pulls her out of her quiet retirement and arrests her on the grounds of treason. But did she really commit those crimes and give away Britain’s secrets to the Russians as a KGB spy in the 1930s?
The answer is yes, and we know that it is about to happen and how it comes to be as the movie opens with the young Joan becoming friends with some Russians who are communists.  She has a head for science and the story is a fascinating one.