Cast
- William 'Stage' Boyd as Dr. Zolok
- Kane Richmond as Bruce Gordon
- Claudia Dell as Natcha Manyus
- Josef Swickard as Dr. Manyus
- Sam Baker as Hugo
- Eddie Fetherston as Jerry Delaney
- Billy Bletcher as Gorzo
- Jerry Frank as Appollon
- George 'Gabby' Hayes as Butterfield
- William Millman as Dr. Colton
Crew
- Harry Revier · Director
- Zelma Carroll · Writer
- George M. Merrick · Writer
- Robert Dillon · Writer
- Perley Poore Sheehan · Writer
- Sherman S. Krellberg · Producer
- Edward Linden · Cinematographer
- Roland Price · Cinematographer
- Holbrook N. Todd · Editor