This 1969 film has a star cast - with a young Anthony Hopkins being historionic and moral in the face of callous spy-handler Ralph Richardson and his upper crust M16 bods.
It starts in Finland, then moves to the UK and finally East Germany (with some unusual scenery of the place).
It's all a bit like a B-move Day of the Jackal - and based on a John Le Carre novel too. But it's still a good. effective thriller.
The handsome star - Christopher Jones - is excellent, but seems to have disappeared without trace soon after this movie (apparently he was drugged against his knowledge whilst in Ryan's Daughter in 1970, and left acting to be an artist after that).
This movie is a bit preachy at times, in line with the late 60s anti-war 'love n peace' shtick - however, it's still a good watch and unlike modern movies does not have a booming soundtrack. Also, the actors - all British - get their foreign accents pretty spot-on (take note lazy BBC drama producers!).
4 stars.