Prolific B movie studio Monogram supplied this World War II thriller that has an unusual twist: the heroes are Hollywood entertainers seeking to prevent Nazi spies from acquiring an anti-aircraft searchlight filter invented by a stage electrician. The inventor's daughter, singer Mitzi (Gale Storm), and her boyfriend, Jimmy (John Shelton), are drawn into a dangerous cat-and-mouse game with the spies and use wire-tapping to trap their enemies.