After a defector is murdered, British agent Fielding Scott is assigned to track down a mole in his own ranks in 1961 Berlin. His investigation leads him into a deadly web of crime, betrayal and paranoia. Who can Scott trust in the city of spies?

Bruno is not just any cop. He is Boom Boom Bruno, the district's cowboy. Everything here is under his control. His criminals, his hookers, his boss. He is thrilled with his new partner Mark – it's up to him to teach this insecure boy to be a real man with balls. When a drag queen is found dead on his turf, however, both Bruno and Mark must fight their own prejudices and meet resistance coming from all sides to solve the case.