Characters played by Barbara Shelley
Leonora Johnson - née Brandt
Characters played by Robert Ayres
Dr. Brian Marlowe
Characters played by Kay Callard
Dorothy Marlowe
Characters played by Ernest Milton
Edmund Brandt
Characters played by Lily Kann
Anna (Brandts' Housekeeper)
Characters played by Jack May
Richard Johnson
Characters played by Paddy Webster
Cathy
Characters played by John Lee
Allan
Characters played by Edward Harvey
Doorman
Characters played by Martin Boddey
Cafferty
Characters played by John H. Watson
Roberts
Characters played by Frank Atkinson
Guard
Characters played by John Baker
Male Nurse
Characters played by Selma Vaz Dias
Nurse
Characters played by Charles Saynor
Man Wheeling Bicycle
Characters played by Geoffrey Tyrrell
Caretaker
Characters played by Jim Tyson
Barman
Characters played by Joe Wadham
Policeman