कलाकार
Donald Wolfit
Sydney Parsons
Arthur Hambling
Man on BBC Reception Desk (uncredited)
Austin Trevor
Leopold Dryden
Peter Haddon
Guy Bannister
Jack Hawkins
Herbert Evans
Ivor Barnard
Joseph Higgins (uncredited)
Lilian Oldland
Joan Dryden
Betty Ann Davies
Poppy Levine
Bruce Lester
Peter Ridgwell (uncredited)
Ian Hunter
Detective Inspector Gregory
Robert Rendel
Sir Herbert Farquharson
Gordon McLeod
Chief Commissioner
Howard Douglas
Weisskopf (uncredited)
Henry Kendall
Rodney Fleming
Val Gielgud
Julian Caird