Intriguing espionage drama, based on the Len Deighton novel.

Decent, reasonably complex, plot. Not 100% watertight, but the holes aren't big.

Solid direction by Sidney J Furie. Movie moves along at a decent pace and he builds the tension well. Does miss a few beats though. Some scenes are quite flat and almost pointless.

Good final few scenes which make it all worthwhile and bring everything together.

Good performance by Michael Caine in the lead role. Not your average spy - he is almost the anti-James Bond. Resourceful, but slovenly and, well, human. Seemed much more like a real agent would be than James Bond.

Good support from Nigel Green and Guy Doleman.

Although there are elements most of viewers know from James Bond movies, it is not a clone of them; it was just a mode or manner how spy films in Europe were directed and produced in the 1960ies and later on as well. Rude and drinking cops with poor "kinderstube" or questionable education started to appear in the U.S. films in the 1970ies.

At present, the issue of scientists changing sides or engaging them in creating armament, hacking systems, false objects etc. is still actual, most of it is done through money or promotion, but kidnapping or threats are still available in pariah countries. In the 1960ies, Albania had similar reputation than North-Korea today...

Recommendable to admirers of Michael Caine and/or thrillers without constant chases, bursts or awkward fooling. It is pleasant to recognise that the 2011 Tinker Tailor Soldier Spy bears the same nice traditions.