Director
Paul L. Stein
DIRECTOR
Stars (in credits order)
Robert Beatty
Bob Beacham
Rona Anderson
Mary Game
Clifford Evans
Tom Harmon
Stewart MacPherson
Stewart MacPherson - The Twenty Questions Team Moderator
Jack Train
Jack Train - The Twenty Questions Team Member
Jeanne De Casalis
Jeanne De Casalis - The Twenty Questions Team Guest Artiste
Daphne Padel
Daphne Padel - The Twenty Questions Team Member
Richard Dimbleby
Richard Dimbleby - The Twenty Questions Team Member
Norman Hackforth
Norman Hackforth - The Twenty Questions Team 'Mystery Voice'
Edward Lexy
Detective Inspector Charlton
Olga Lindo
Olive Tavey
Frederick Leister
Police Commissioner
Harold Scott
Maurice Emery KC
Wally Patch
Police Officer 'Tiny' White
John Salew
John Grimshaw
Gordon McLeod
Record News Editor
Liam Redmond
Echo News Editor
Kynaston Reeves
General Maitland-Webb
Homi Bode
Mohammed Ali
Sonya O'Shea
Stewart MacPherson's Secretary
Johnnie Schofield
Commissionaire
Philip King
Cheshire Cheese Waiter
Arthur Young
Doctor
Martin Boddey
2nd Plainclothesmanuncredited
Michael Dear
1st Newsboyuncredited
Howard Douglas
Police Doctoruncredited
Norman Pierce
Golf Club Barmanuncredited
Stuart Saunders
Laundry Delivery Manuncredited
Charles Saynor
Detectiveuncredited
Jack Sharp
Crewman with Prompt Boarduncredited
John Tatham
20 Questions Audience Memberuncredited
Merle Tottenham
Mrs. Tavey's Neighbouruncredited
Stanley Van Beers
McIntyreuncredited
Meadows White
Frederick 'Ricky' Taveyuncredited
June Whitfield
Undetermined Secondary Roleuncredited