This documentary covers the life of Alan Turing, a british thinker who's seminal work covered broad topics, particularly in mathematics. He is considered to be the original computer scientist, pioneering ideas in cryptography and artificial intelligence. While biopics must, to some extent, gloss over the science for the brevity of the story, codebreaker manages to provide sufficient explanation of Turings ideas and accomplishments and the historical events surrounding them. A visit to his wikipedia page explains why covering everything he did in one movie is nearly impossible. This film attempts to explain who Alan Turing was, which is a challenge given that he is an enigma in some ways. Interviews with people knowledgeable about Turing or his work are intermixed with and actors playing the roles of Turing and his psychiatrist during the final days of his life. This story does not have a happy ending, but that can be nullified somewhat by celebrating his life's work.