Characters played by John Mills
Dr. Howard Latimer
Characters played by Derek Farr
Kenneth Palmer
Characters played by Noelle Middleton
Laura James
Characters played by Wilfrid Hyde-White
Maj. Harrington aka Robert Brady
Characters played by Roland Culver
Detective Inspector Dane
Characters played by Mervyn Johns
Dr. George Kimber
Characters played by Rene Ray
Mrs. Ambler
Characters played by Lionel Jeffries
Geoffrey Windsor
Characters played by Lisa Daniely
Frieda Veldon
Characters played by David Williams
The Detective Sergeant
Characters played by Diana Lambert
Latimer's Office Nurse
Characters played by Hal Osmond
Joe - Golf Caddy
Characters played by Gillian Moran
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Characters played by Hyma Beckley
Royal Festival Hall Audience
Characters played by Dennis Carnell
Man in Audience
Characters played by Fred Davis
Man in Audience
Characters played by Mabel Etherington
Lady in Audience
Characters played by Roy Everson
Man in Audience
Characters played by Frank Forsyth
Sgt. Wallace
Characters played by John Gordon
Surgeon
Characters played by Victor Hagan
Surgeon
Characters played by Patrick Halpin
Officer
Characters played by Lindsay Hooper
Policeman
Characters played by Aileen Lewis
Royal Festival Hall Audience
Characters played by Jack May
Golf Caddie
Characters played by Jim O'Brady
Reporter Outside Police Station
Characters played by Joe Phelps
Policeman
Characters played by John Wilder
Detective