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