演职人员
导演
雷金纳德·德纳姆
Detective Inspector Gregory
Ian Hunter
Leopold Dryden
Austin Trevor
Joan Dryden
Lilian Oldland
Rodney Fleming
Henry Kendall
Julian Caird
Val Gielgud
Guy Bannister
Peter Haddon
Poppy Levine
Betty Ann Davies
Herbert Evans
杰克·霍金斯
Sydney Parsons
Donald Wolfit
Sir Herbert Farquharson
Robert Rendel
Chief Commissioner
Gordon McLeod
Hannen Swaffer
Hannen Swaffer
Vernon Bartlett
Vernon Bartlett
Eric Dunstan
Eric Dunstan
Gillie Potter
Gillie Potter
Elisabeth Welch
Elisabeth Welch
Eve Becke
Eve Becke
Gershom Parkington
Gershom Parkington
Percival Mackey
Percival Mackey
Joseph Higgins (uncredited)
Ivor Barnard
Police Doctor (uncredited)
Cecil Bevan
Foreigner (uncredited)
George De Warfaz
Weisskopf (uncredited)
Howard Douglas
Man on BBC Reception Desk (uncredited)
Arthur Hambling
Detective (uncredited)
Vincent Holman
Peter Ridgwell (uncredited)
Bruce Lester
Wife's Lover on Broadcast (uncredited)
Percy Rhodes