తారాగణం & సిబ్బంది
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Boris KarloffDr. John Garth - Evelyn KeyesMartha Garth
- Bruce BennettDr. Paul Ames
- Kenneth MacDonaldAnson, Prison Guard
- Edward Van SloanDr. Ralph Howard
- Ben TaggartWarden Thompson
- Pedro de CordobaVictor Sondini
- Wright KramerGeorge Wharton
- Bertram MarburghStephen Barclay
- Nick Grindeడైరెక్టర్
- Robert Hardy Andrewsరైటర్