Major Lex Kearney, dishonourably discharged from the army for cowardice in battle, volunteers to go undercover to try to prevent raids against shipments of horses desperately needed for the Union war effort. Falling in with the gang of jayhawkers and Confederate soldiers who have been conducting the raids, he gradually gains their trust and is put in a position where he can discover who has been giving them secret information revealing the routes of the horse shipments.
Gary Cooper
Phyllis Thaxter
David Brian
Paul Kelly
Philip Carey
Lon Chaney Jr.
James Millican
Guinn "Big Boy" Williams
Alan Hale Jr.
Martin Milner
Wilton Graff
George Eldredge
Fess Parker
Ewing Mitchell
Richard Hale
James Brown
Michael Chapin
Ben Corbett
Vince Barnett
William Fawcett
Edward Hearn
Art Felix
Mike Ragan
Nedrick Young
Jack Woody
Tony Urchel
Artie Ortego
Ric Roman
Poodles Hanneford
George Sowards
Jack Tornek
William Steele
Philo McCullough
Ralph Sanford
Rory Mallinson
Fred Kelsey
Stuart Hall
Dick Gordon