Exit Berlin is set at the time that the GDR and the wall collapses and revolves around the question: what happens to secret services and defectors when a regime folds. The protagonist is James Martin, a former British agent who defected to the GDR four years previously. Martin’s position is made more difficult because he is actually a double-agent, planted by the British to try and identify a traitor in SIS, though that fact seems to have been forgotten; an inconvenient truth when the different sides are trying to brush over cold war activities. Rather than returning to his old life, it seems it would be better for some if he disappeared altogether. Sebastian tells Martin’s story through a first person narrative. Though not always the most engaging voice given the character’s dourness, the tale nonetheless maintains intrigue, with Martin unsure of where he stands or who to trust among old colleagues both behind and outside the Iron Curtain. The characterisation, unsettled dynamics and sense of place is nicely done, though the plot is a times a little elusive and by the end I didn’t feel I had a sure grasp of all the intricacies. A decent enough Cold War spy tale.