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.
1934
1920
1914
2022
1944
1919
2008
1991
1948
1938
1935
1933
2019
1942
1925
1937
2021
1943
1945
