Characters played by Richard Todd
Charles Cameron
Sutherland
Characters played by Glynis Johns
Katherine
Characters played by Joan Greenwood
Wilhelmina Cameron
Characters played by André Morell
Dr. Marshall
Characters played by Ursula Howells
Harriet Marshall
Characters played by Freda Jackson
Mrs. Hannah
Characters played by George Cole
John Hannah
Characters played by James Hayter
Sir Douglas Manley
Characters played by Ronald Howard
Purley
Characters played by Muriel Aked
Mrs. Walker
Characters played by Michael Hordern
Webster
Characters played by Helen Christie
Minnie Arnott
Characters played by Walter Fitzgerald
Dr. Cooper
Characters played by Lily Kann
Sister Maria
Characters played by Patrick Macnee
Sutherland
Characters played by Fred Johnson
Donovan
Characters played by Molly Weir
Margaret
Characters played by Hugh Dempster
Cranley
Characters played by Alexander Gauge
Coutts
Characters played by Betty Paul
Moira
Characters played by Peter Macdonnell
Jordan
Characters played by Hector MacGregor
Major
Characters played by John Vere
Leighton
Characters played by Enzo Coticchia
Forzin
Characters played by Archie Duncan
Sergeant
Characters played by Francis De Wolff
Ambassador
Characters played by Kenneth Downey
Club Porter
Characters played by Sergio Mari
Mario
Characters played by David Cameron
McDermott
Characters played by Bill Logan
McGregor
Characters played by Anna Canitano
Nurse
Characters played by John Kelly
Wilkinson
Characters played by Joan Heal
Girl in Nightclub
Characters played by Nina Parry
Wilhelmina as a Child
Characters played by Billy Newsbury
John Hannah as a Child
Characters played by Sally Owen
Doll
Characters played by William Chappell
Dancer
Characters played by Jock McKay
Baker
Characters played by Jack Sharp
Pub Customer
Characters played by Jack Stewart
Police Constable
Characters played by Richard Wattis
Bespectacled man on phone and lab technician