Hank Davis, foreman on a huge dam project, enlists the aid of his two flyer friends when a sinister figure known as The Black Ace leads his Mystery Squadron of masked pilots in an attempt to destroy the dam.
There are no TV Airings of Mystery Squadron in the next 14 days.
Add Mystery Squadron to your Watchlist to find out when it's coming back.
Check if it is available to stream online via "Where to Watch".