September 1941: Bernie Gunther’s old boss, Reinhard Heydrich, purchases him to Prague to stay at his nation house. When a body is found in a room locked from the inside, the limelight falls on Bernie to solve the secret. If he fails to achieve this, he knows what’s at stake – the trustworthiness of Heydrich, a man who does not like to lose encounter. So begins probably the most diplomatically delicate case of Bernie Gunther’s police career.