On screen
Cast
24 credited performers
Robert Beatty
Bob Beacham
Rona Anderson
Mary Game
Clifford Evans
Tom Harmon
Artwork unavailable
Edward Lexy
Det. Insp. Charlton
Olga Lindo
Olive Tavy
Artwork unavailable
Daphne Padel
Self - The Twenty Questions Team
Jeanne De Casalis
Self - The Twenty Questions Team guest artiste
Artwork unavailable
Jack Train
Self - The Twenty Questions Team
Artwork unavailable
Stewart MacPherson
Self - The Twenty Questions Team
Artwork unavailable
Norman Hackforth
Self - The Twenty Questions Team 'Mystery Voice'
Artwork unavailable
Richard Dimbleby
Self - The Twenty Questions Team
Artwork unavailable
Harold Scott
Maurice Emery KC
Liam Redmond
Echo News editor
Artwork unavailable
Homi Bode
Mohammed Ali
Kynaston Reeves
Gen. Maitland
Artwork unavailable
Sonya O'Shea
Stewart MacPherson's secretary
Frederick Leister
Police Commissioner
Wally Patch
Police Officer 'Tiny' White
John Salew
John Grimshaw
Gordon McLeod
Record News editor
Artwork unavailable
Philip King
Cheshire Cheese waiter
Arthur Young
Doctor
Merle Tottenham
Mrs. Tavy's Neighbour (uncredited)
Meadows White
Frederick 'Ricky' Tavey (uncredited)