Igralci in ekipa
-
Dana AndrewsDr. John Holden - Peggy CumminsJoanna Harrington
- Niall MacGinnisDr. Julian Karswell
- Maurice DenhamProfessor Henry Harrington
- Athene SeylerMrs. Karswell
- Liam RedmondProfessor Mark O'Brien
- Reginald BeckwithMr. Meek
- Ewan RobertsLloyd Williamson
- Peter ElliottProfessor K.T. Kumar
- Rosamund GreenwoodMrs. Meek
- Richard LeechInspector Mottrarn
- Lloyd LambleDetective Simmons
- Peter HobbsSuperintendent
- Charles Lloyd-PackChemist
- John SalewLibrarian
- Percy HerbertFarmer (deleted from US print)
- Jacques TourneurRežiser
- Frank BevisProducent
- Hal E. ChesterProducent
- M.R. JamesPisec
- Charles BennettPisec
- Hal E. ChesterPisec
- Cy EndfieldPisec