Robert Stack as Lt. Billings

Joan Taylor as Wanima

Charles McGraw as Sgt. Clarke

Keith Larsen as Taslik

Peter Graves as Trooper Tolson

Robert J. Wilke as Trooper Grady

John Doucette as Trooper Charnofsky

Walter Reed as Trooper Allison

Douglas Kennedy as Trooper Clancy

Charles Nolte as Cpl. Hamilton

James Parnell as Trooper Martin

William Pullen as Jeb

Richard H. Cutting as Commissioner Kirby (as Richard Cutting)

Anthony Jochim as Trading Post Proprietor (uncredited)

Paul Richards as Trooper Perkins