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