Reparto y equipo
-
Basil RathboneSir Joel Cadman - Akim TamiroffOdo the Gypsy
- Béla LugosiCasimir
- Lon Chaney Jr.Mungo aka Dr. Monroe
- John CarradineBorg aka Bohemond
- Herbert RudleyDr. Gordon Angus Ramsay
- Patricia BlairLaurie Monroe
- Phyllis StanleyNurse Daphne
- Tor JohnsonMr. Curry
- Sally YarnellNancy
- George SawayaSailor
- Claire CarletonCarmona Daly
- Peter GordonSgt. Steele (uncredited)
- Louanna GardnerAngelina Cadman (uncredited)
- Clive MorganRoundsman Blevins (uncredited)
- John SheffieldDet. Redford (uncredited)
- Reginald Le BorgDirección
- Howard W. KochProducción
- Aubrey SchenckProducción
- John C. HigginsEscritor