

31/01/1950
The story evolves around a radio panel game show "Twenty Questions." The panel is challenged with an anonymous question. The answer leads to a series of murders in which the killer uses the programme to name his victims in advance. Two reporters spot a link between them and enlist the aid of the panel in trapping the guilty party.

Robert Beatty
as Bob Beacham

Rona Anderson
as Mary Game

Clifford Evans
as Tom Harmon

Edward Lexy
as Det. Insp. Charlton

Olga Lindo
as Olive Tavy

Daphne Padel
as Self - The Twenty Questions Team

Jeanne De Casalis
as Self - The Twenty Questions Team guest artiste

Jack Train
as Self - The Twenty Questions Team

Stewart MacPherson
as Self - The Twenty Questions Team

Norman Hackforth
as Self - The Twenty Questions Team 'Mystery Voice'

Richard Dimbleby
as Self - The Twenty Questions Team

Harold Scott
as Maurice Emery KC

Liam Redmond
as Echo News editor

Homi Bode
as Mohammed Ali

Kynaston Reeves
as Gen. Maitland

Sonya O'Shea
as Stewart MacPherson's secretary

Frederick Leister
as Police Commissioner

Wally Patch
as Police Officer 'Tiny' White

John Salew
as John Grimshaw

Gordon McLeod
as Record News editor

Philip King
as Cheshire Cheese waiter

Arthur Young
as Doctor

Merle Tottenham
as Mrs. Tavy's Neighbour (uncredited)

Meadows White
as Frederick 'Ricky' Tavey (uncredited)
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