The Flying Torpedo
Plot: In the future (1921), an alliance of several foreign countries plot to attack the US. American officials, coming to the realisation that the country is basically defenceless, offer $1,000,000 to anyone who can come up with a weapon to defeat the invaders

John Emerson
Bessie Love
Spottiswoode Aitken
W.E. Lawrence
Fred J. Butler
Lucille Young
Erich von Stroheim
Ralph Lewis
Christy Cabanne
John B. O'Brien