Randolph Scott as Tom Andrews

Jane Wyatt as Dr. Edith Cabot

J. Carrol Naish as Dynamite Dawson

Victor Jory as Dirk Rourke

Nancy Olson as Cecille Gautier

Robert Barrat as William Van Horne

John Parrish as Mr. Gautier

Mary Kent as Mrs. Gautier

Walter Sande as Mike Brannigan

Don Haggerty as Cagle

John Hamilton as Pere Lacomb

Grandon Rhodes as Dr. Mason

Dick Wessel as Bailey

George Chandler as Telegraph Operator

Howard Negley as Mallis

Ralph Clanton as Opening Narrator (voice)

Chief Yowlachie as Indian Chief (uncredited)

Norman Jewison as Joe Podge (uncredited)

Earle Hodgins as Sandy McNair (uncredited)

Edmund Cobb as Jim (uncredited)

Chris Willow Bird as Indian Chief (uncredited)

Ben Erway as British Columbia Representative (uncredited)

Sam Ash as Speaker from Ontario (uncredited)

Holmes Herbert as Head of Canadian Parliament (uncredited)

Bert Stevens as Member of Parliament (uncredited)

Manuel París as Member of Parliament (uncredited)

Oliver Cross as Member of Parliament (uncredited)

Al Haskell as Trapper (uncredited)

Richard Alexander as Railroad Worker (uncredited)

Ray Bennett as Railroad Worker (uncredited)

Nick Borgani as Railroad Worker (uncredited)

John Bose as Railroad Worker (uncredited)

Rudy Bowman as Railroad Worker (uncredited)

Chet Brandenburg as Railroad Worker (uncredited)

Roy Bucko as Railroad Worker (uncredited)

Art Felix as Railroad Worker (uncredited)

Kit Guard as Railroad Worker (uncredited)

Ray Jones as Railroad Worker (uncredited)

Jack Kenny as Railroad Worker (uncredited)

Sam Lufkin as Railroad Worker (uncredited)

Cactus Mack as Railroad Worker (uncredited)

Kermit Maynard as Railroad Worker (uncredited)

Merrill McCormick as Railroad Worker (uncredited)

Billy McCoy as Railroad Worker (uncredited)

Rowland McCracken as Railroad Worker (uncredited)

Robert Milasch as Railroad Worker (uncredited)

Anton Northpole as Railroad Worker (uncredited)

Joe Phillips as Railroad Worker (uncredited)

Ray Spiker as Railroad Worker (uncredited)

Jack Tornek as Railroad Worker (uncredited)

Roque Ybarra as Railroad Worker (uncredited)