Casts
Peter Cushing
as Dr. Brian Stanley
Edward Judd
as Dr. David West
Carole Gray
as Toni Merrill
Eddie Byrne
as Dr. Reginald Landers
Sam Kydd
as Constable John Harris
Niall MacGinnis
as Mr. Roger Campbell
Liam Gaffney
as Ian Bellows
Margaret Lacey
as Old Woman
Peter Forbes-Robertson
as Dr. Lawrence Phillips
Shay Gorman
as Morton
