Sometimes it is the people no one imagines anything of who do the things that no one can imagine. This statement is made three times during the film at the most poignant times in it. This is a well crafted film and though the film is essentially based on Alan Turing it doesn't overshadow the fact that Alan Turing cracked the Enigma code with a small team that helped win the war. It is also difficult to imagine that once upon a time in history to be a homosexual was a death sentence and it highlights also that woman were not allowed to go for or to do what was considered a mans job. I go to the cinema to be entertained, thrilled, shocked try and guess the ending to a thriller or to be educated. The film accomplishes most of that; but its the revelation that one of the Worlds greatest mathematicians and greatest minds at the time whose commitment to breaking Enigma and pioneered the modern age of the computer was treated so appalling in the end and it is a story that must be told and it is told here without patronising its audience. And Joan Clarke (played by Kiera Knightley maybe not as convincingly as the rest of the ensemble cast ) highlights just how hard it was for a woman with intelligence and Alan Turing's' vision to establish herself as an equal- Today it is almost incomprehensible that we would treat people with such disdain and so callously because of their sexual orientation or indeed women as badly - although women are still not treated as equal in some quarters-