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