Three documentaries revealing German secrets from the Second World War. 'Plotting to Kill Hitler' looks at the most famous attempts to assassinate the Fuhrer with would-be killers including the Kreisau Circle and the Black Orchestra. The programme also looks at the mystery surrounding the escape from Hitler's bunker. After Hitler and Goebbels shot themselves other high-ranking Nazi officials made a break for it. Goering and Himmler were caught,but what happened to the rest? In 'Tracking Nazi Gold' in the early days of the war,Hitler systematically plundered the treasuries and banks of the nations he conquered. From the drained wealth of nations to family heirlooms and gold fillings taken from the victims of the Holocaust,this programme traces sixty years of effort to reclaim the lost riches of a continent. In 'Secrets of the Sea Wolves',beneath the surging seas of the North Atlantic lay one of WWII's most important battlegrounds. It was in these vast waters that hundreds of Nazi U-boats lay in wait for the convoys of Liberty Ships bringing vital supplies to the European theatre. This programme relives this epic struggle.