What I like about the movie is its combination of suspense and intelligence.
If it does not quite explain exactly how decryption works, it at least gives us a good idea of how decrypters work, and we understand how crucial Bletchley was — so crucial its existence was kept a secret for 30 years.
The film manages to crack all its codes, and even when it sags a bit, it’s never lacking grace and some wit.
Not enigmatically at all, it pleases and teases us — in high style. The ending makes it worth while the watch