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.
as Bob Beacham
as Mary Game
as Tom Harmon
as Det. Insp. Charlton
as Olive Tavy
as Self - The Twenty Questions Team
as Self - The Twenty Questions Team guest artiste
as Self - The Twenty Questions Team
as Self - The Twenty Questions Team
as Self - The Twenty Questions Team 'Mystery Voice'
as Self - The Twenty Questions Team
as Maurice Emery KC
as Echo News editor
as Mohammed Ali
as Gen. Maitland
as Stewart MacPherson's secretary
as Police Commissioner
as Police Officer 'Tiny' White
as John Grimshaw
as Record News editor
as Cheshire Cheese waiter
as Doctor
as Mrs. Tavy's Neighbour (uncredited)
as Frederick 'Ricky' Tavey (uncredited)
