Cumberbatch shines in this 1960's Cold War spy thriller. This movie is worth watching just for Cumberbatch's performance alone (this is probably his best so far), but he is also backed up by the talented Brosnahan and Ninidze.
This film doesnt run at a fast pace, but if you have patience, it is a little known and extremely rewarding part of history. (More Bridge of Spies than Tom Clancy).