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
Maj. Alex 'Lex' Kearney
Phyllis Thaxter
Erin Kearney
David Brian
Austin McCool
Paul Kelly
Lt. Col John Hudson
Philip Carey
Capt. Edward Tennick
Lon Chaney Jr.
Pete Elm
James Millican
Matthew Quint
Guinn 'Big Boy' Williams
Sgt. Snow
