This film is about Alan Turing, the Cambridge mathematician who basically invented the computer, and his efforts during WWII to build a machine to crack the Nazi’s “unbreakable” Enigma code-making device. We basically follow two stories: one during the war, and one a decade later, when cops following up on a break-in at his house figure out he was a homosexual and decide to arrest him. There are also occasional flashbacks to Turing’s school days.
That dual storyline is a little confusing — the time jump between scenes was not always well established (at least the childhood ones were clear) — but the concept did help propel the movie and provided some additional tension.
Overall, I thought this was fantastic: the performance of Benedict Cumberbatch as Turing was excellent, with just enough drama to be compelling without going over into hysteria or melodrama, and the supporting cast was also terrific. The story was good, well-paced and interesting, and the personal revelations were helpful in understanding the man.
The film is heavy-handed in overemphasizing the discrimination Turing faced (a bit “preachy”), and I really wanted more details about exactly what his machine did and how it worked. (The film is remarkably short of technical details, perhaps out of fear that it might bore viewers — but without it we really don’t understand half of what Turing is doing in the movie! It also makes it more difficult to truly appreciate his genius since we don’t know what he actually did.)
Despite these flaws, the film works. There are tons of absolutely fabulous scenes. Turning’s “job interview” at Bletchley Park is absolutely masterful in revealing Turing’s personality. I loved it when a guard tries to send Joan, a woman applying to be a codebreaker, to the “secretarial pool,” and then she solves a crossword even faster than Turing. But my very favorite scene scene was when young Turning is at school and a mate gives him a book on ciphers and explains that they are encrypted messages that everyone can see but only those with the key can understand. Turing asks him, “How is that different from talking?”
For him, you see, everyone seemed to be talking in a code he couldn’t break. He was oblivious to the hidden communication that most humans practice. (Example: a colleague mentions three times that they’re going to lunch, obviously inviting the still-working Turing to come. Finally, exasperated, he tells him this, and Turning is surprised and says: “You didn’t invite me. You merely said you were going to lunch.” Which was literally true.)
Ultimately, the film is a little sad, as Turning’s work was kept secret for fifty years and he never received the recognition he deserved. Breaking Enigma pretty much won the war for the Allies — at minimum it shorted the war by years and saved the lives of millions. I found it fascinating that a man who really didn’t understand other people could be responsible for saving so many. And Turning’s work on early computing is responsible for all the computers we have today. That’s an amazing legacy for a man almost forgotten by history simply because he was an “odd duck” and hard to work with.