All Cast
Peter Cushing
Dr. Brian Stanley
Edward Judd
Dr. David West
Carole Gray
Toni Merrill
Eddie Byrne
Dr. Reginald Landers
Sam Kydd
Constable John Harris
Niall MacGinnis
Mr. Roger Campbell
James Caffrey
Peter Argyle
Liam Gaffney
Ian Bellows
Keith Bell
Halsey
Margaret Lacey
Old Woman
Peter Forbes-Robertson
Dr. Lawrence Phillips
Shay Gorman
Morton
Richard Bidlake
Carson
Edward Ogden
Helicopter Pilot
Joyce Hemson
Mrs. Bellows
