Benedict Cumberbatch gives an award winning performance as Alan who tells his story in a series of narratives and flashbacks. Bullied as a child, Alan had one close friendship that begins his life as a code breaker. His machine was the foundation for computers. It was sad what happened to him because we lost the potential for so many more brilliant creations with his death.
The previews also don’t share or hint at Alan’s secret. He was homosexual at a time in Britain’s history where homosexuals were persecuted and when he was caught, the hormone treatment destroyed his brain. I don’t understand why the director didn’t bring this out during the previews. It was a huge part of who he was and it appeared that the director covered it up.