Jack London

Michael O'Shea

Jack London

Susan Hayward

Charmian Kittredge

Osa Massen

Freda Maloof

Harry Davenport

Prof. Hilliard

Frank Craven

Old Tom

Virginia Mayo

Mamie

Ralph Morgan

George Brett

Jonathan Hale

Kerwin Maxwell

Edward Earle

James Hare

Morgan Conway

Richard Harding Davis

Alfred Santell

Director

Ernest Pascal

Screenplay

John W. Boyle

Director of Photography

Freddie Rich

Original Music Composer

William H. Ziegler

Editor

Samuel Bronston

Producer

Isaac Don Levine

Adaptation

Charmian London

Book

Evelyn Finley

Stunts

Bernard Herzbrun

Art Direction

Earl Wooden

Set Decoration