Unknown is a superior, if disposable, action thriller. It first brings to mind the Bourne franchise but is a better fit to Total Recall in terms of memory and identity. Most of the villains get a satisfying pay-off and I spotted, before it was revealed, the chief baddie. You really notice how big Liam Neeson is in comparison to the women in the film but it is all part of the dissonance. It is also pleasing to see the trend continue whereby Hollywood movies locate in the not too familiar (though probably cheap too) environs of Berlin.