Jack London

Michael O'Shea

Charmian Kittredge

Susan Hayward

Freda Maloof

Osa Massen

Prof. Hilliard

Harry Davenport

Old Tom

Frank Craven

Mamie

Virginia Mayo

George Brett

Ralph Morgan

Kerwin Maxwell

Jonathan Hale

James Hare

Edward Earle

Richard Harding Davis

Morgan Conway

Director

Alfred Santell

Stunts

Evelyn Finley

Screenplay

Ernest Pascal

Director of Photography

John W. Boyle

Art Direction

Bernard Herzbrun

Book

Charmian London

Producer

Samuel Bronston

Assistant Director

Sam Nelson

Editor

William H. Ziegler

Original Music Composer

Freddie Rich

Adaptation

Isaac Don Levine

Set Decoration

Earl Wooden