Something that has always been of great interest to me is the handling of, and interaction with, secret and clandestine materials. Espionage films, therefore, are a perfect fit for me! People who are willing to subvert and corrupt their own selves, often at great personal or material risk, for what they believe to be a greater cause, or the well-being of place or ideal, suggest a conviction that, while not always ideal, is certainly interesting to see the motivation behind it. Of course, when these convictions are turned upon the institutions that foster them, such as in this film, the integrity, the true value, of those ideals are really put to the test - is it worth attacking the very institutions that are designed to foster your ideals in pursuit of those ideals? Sometimes, however, in order to save the ideals, the institution needs the attack. And so, throughout the course of this film, the forces of British intelligence go to war over what represents the best way to save Britain, and how far one must go to save an ideal, which in this case, just so happens to be a nation.