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
2010
2001
1940
1928
1932
1939
1954
1930
2023
1929
1952
1941
1934
1933
2022
1921
2016
