Casts
Peter Cushing
as Detective Inspector Quennell
Robert Flemyng
as Dr. Carl Mallinger
Wanda Ventham
as Clare Mallinger
Glynn Edwards
as Sgt. Allan
Kevin Stoney
as Granger the Butler
Vanessa Howard
as Meg Quennell
Roy Hudd
as Morgue Attendant
Russell Napier
as Landlord
Kenneth Colley
as James
