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