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