Torn between love of his country and love for the woman he makes his wife, a patriot must decide whether to remain safe in New York or return to fight the Nazis in the World War II drama Dangerous Moonlight. Concert pianist Stefan Radetzky (Anton Walbrook) refuses to leave Poland when the Germans invade. Only the fast thinking of his friends who trick him into leaving the country saves his life. Pursuing his concert career in New York and marrying Carol Peters (Sally Gray), Stefan cannot stay in America and travels to England to join a Polish Air Force squadron.