Characters played by Susan Strasberg
Penny Appleby
Characters played by Ronald Lewis
Robert
Characters played by Ann Todd
Jane Appleby
Characters played by Christopher Lee
Dr. Pierre Gerrard
Characters played by John Serret
Inspector Legrand
Characters played by Leonard Sachs
Mr. Spratt
Characters played by Anne Blake
Marie
Characters played by Fred Johnson
Mr. Appleby
Characters played by Heinz Bernard
Plainclothes Officer
Characters played by Bernard Browne
Gendarme
Characters played by Rodney Burke
Policeman
Characters played by Brian Jackson
Plainclothes Officer
Characters played by Richard Klee
Plainclothes Sergeant
Characters played by Madame Lobegue
Swiss Air Hostess
Characters played by Frederick Rawlings
Plainclothes Sergeant
Characters played by Frederick Schrecker
Plainclothes Officer
Characters played by Gordon Sterne
Policeman