Characters played by Jack Watling
Dennis Willows
Characters played by Rona Anderson
Sallie Harbord
Characters played by John Horsley
Peter Hastings
Characters played by Russell Napier
Inspector Simmons
Characters played by Kenneth Kent
Dr. Cole
Characters played by Mary Jones
Florence Cole
Characters played by Alastair Hunter
Sgt. Thorpe
Characters played by Joan Hickson
Miss Edinger
Characters played by John Le Mesurier
Phineas Tilliard
Characters played by June Ashley
Madeline Tilliard
Characters played by Hélène Burls
Mrs. James
Characters played by Edward French
Bit Part
Characters played by Peter Gilmore
Walk on part
Characters played by Arthur Gross
Bit Part
Characters played by Humphrey Morton
Usher
Characters played by Bartlett Mullins
Coroner
Characters played by Dandy Nichols
Waitress
Characters played by Alan Robinson
Porter
Characters played by Hugh Stewart
Policeman