Jack Holt

G-Man Martin Galloway, posing as Bill Donovan

Wynne Gibson

Alice Segar, posing as Mrs. Donovan

C. Henry Gordon

Kilgour

Jack La Rue

Fred Drake

Edward Brophy

Lefty

William Pawley

Harry Grady

Arthur Hohl

Henchman Blackie

Robert Emmett O'Connor

Federal Agent Jim

William Bakewell

Dick Withers

Eleanor Stewart

Nancy Higbee

Charles Lane

Fingers

Frank Darien

Dad Higbee

Richard Tucker

Agency Chief Conover

George Cleveland

Miner

Hal Taliaferro

Federal Agent