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.
1920
1942
1935
1951
2019
1949
1915
1918
1917
1914
1919
1922
1996
2000
2007
2002
2008
1939
2006
