Colognian commissioner Gereon Rath moves to Berlin, the epicenter of political and social changes in the Golden Twenties.

A Christmas reunion becomes a gateway to the past in this three-part series that explores the intimate complexities of one family's history.

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?