Germany, 1938. In Berlin, his owners christened him Levi. A good Jewish dog with a good Jewish name. When they fled to America, he became Hercules. Star of the silver screen in Hollywood's golden age. Then he caught the eye of Hitler, who called him Hansi. A pure-bred lapdog; privy to all the Fuhrer's secrets. But he was known to the Resistance as Sirius. The insider who could bring peace to a world at war... Now it is time for his story to be told. SIRIUS: the little dog who almost changed history.