A man's body is found buried in concrete at a building site in the new town district. When People's Police homicide captain Karin Müller arrives at the scene, she discovers that all of the body's identifiable features have been removed - including its fingertips. The deeper Müller digs, the more the Stasi begin to hamper her investigations. She soon realises that this crime is just one part of a clandestine battle between two secret services - the Stasi of East Germany and Britain's MI6 - to control the truth behind one of the deadliest events of World War II.