Trailer
Diễn viên
Lloyd Hughes
Edward E. Malone
Bull Montana
Ape Man
Jules Cowles
Zambo
Nelson McDowell
Lawyer
Gilbert Roland
Extra
Bessie Love
Paula White
Wallace Beery
Prof. Challenger
Alma Bennett
Gladys Hungerford
Virginia Brown Faire
Marquette
Arthur Conan Doyle
Himself
Leo White
Percy Potts
Lewis Stone
Sir John Roxton
Arthur Hoyt
Prof. Summerlee
Margaret McWade
Mrs. Challenger