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