This film is, in a word, fantastic. Caine plays a British secret service agent who is assigned to find out who is brainwashing the country's top scientists. This is an interesting slant on the usual cold war thriller plots and is much more believable than James Bond films, although it lacks the latter's explosive action. this is the antithesis of Bond as Caine lives on a meagre wage, has a bedsitting flat and does his own shopping! He also wears glasses and in one scene, chats up his female work colleague whilst cooking. The plot is also a lot more grown-up than its Bond counterpart - there are no cat stroking madmen intent on world domination. What makes the film is the idiosyncratic camera angles and the grainy film quality which adds to the oppressive cold war drama. The brainwashing scene is quite amusing and cliched by todays standards with psychodelic images, trippy music and "You-are-getting-sleepy..." type-quotes. Guy Doleman and Nigel Green head up a brilliant supporting cast which include a few familiar British faces. It is interesting to note that the film was produced by the same people who bring Bond to the screen and even the excellent soundtrack is courtesy of John Barry.