A physician discovers that two children are being kept virtually imprisoned in their house by their father. He investigates, and discovers a web of sex, incest and satanic possession.
| Actor | Role |
|---|---|
 Robert HardyZorn | Zorn |
 Shane BriantEmil | Emil |
 Gillian HillsElizabeth | Elizabeth |
 Yvonne MitchellHilda | Hilda |
 Paul JonesCarl Richter | Carl Richter |
 Patrick MageeFalkenberg | Falkenberg |
 Kenneth J. WarrenKlaus | Klaus |
 Michael HordernPriest | Priest |
 Robert BrownFischinger | Fischinger |
 Virginia WetherellInge | Inge |
| DDeirdre CostelloMagda | Magda |
 Barry StantonErnst | Ernst |
| SSidonie BondZorn's Wife | Zorn's Wife |
 Thomas HeathcoteCoachman | Coachman |
| JJohn Atkinson1st Villager | 1st Villager |
| GGeorge Cormack2nd Villager | 2nd Villager |
 Mary HignettMatronly Woman | Matronly Woman |
 Sheila RaynorOld Crone | Old Crone |
| JJan Adair1st Girl | 1st Girl |
| JJane Cardew2nd Girl | 2nd Girl |
 Glenda AllenGirl (uncredited) | Girl (uncredited) |
| RRichard BeaumontYoung Emil (uncredited) | Young Emil (uncredited) |
| FFred WoodVillager Carrying Torch (uncredited) | Villager Carrying Torch (uncredited) |