Cast e produzione
-
Margaret LeightonHelen Teckman - John JustinPhilip Chance
- Meier TzelnikerJohn Rice
- Roland CulverInsp. Harris
- Michael MedwinMartin Teckman
- George CoulourisGarvin
- Duncan LamontInsp. Hilton
- Raymond HuntleyMaurice Miller
- Wendy ToyeRegista
- Francis DurbridgeSceneggiatura
- James MatthewsSceneggiatura