Cast
- Tala Birell as Countess Sandra Lubeska
- Melvyn Douglas as Dr. Walter Tradnor
- Miki Morita as Dr. Kabayochi
- Onslow Stevens as Dr. Roy Stark
- Everett Brown as Nogu
- Billy McClain as The King
- William R. Dunn as Mukovo
- Frank Lackteen as Ivory Trader
- Noble Johnson as Head Boatman
- Jasper Weldon
Crew
- Ernst Laemmle · Director
- Lester Cohen · Writer
- Dale Van Every · Writer
- Don Ryan · Writer
- Carl Laemmle Jr. · Producer
- George Robinson · Cinematographer
- Robert Carlisle · Editor