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