March 1938. The Germans take Vienna without a shot being fired. Covering Austria for the English press is a young journalist named Rod Troy. Back home his younger brother joins the CID as a detective-constable. November 1938. Kristallnacht. The Jews leave Vienna - Sigmund Freud with an American escort on a sleeper train, Josef Hummel tied to the undersize of a boxcar. June 1940. Sergeant Troy is seconded to Special Branch to help in the round-up of 'enemy' aliens, among whom are Hummel and his brother Rod. Rod and Hummel are interned on the Isle of man...meanwhile a lunatic is killing rabbis in the East End of London. Troy asks for time off from Special Branch to return to his true calling...Murder. London is now under siege, from German bombers, from its own prejudice and paranoia's. Is London any better than Vienna?