출연진
Leslie Banks
David Barr
Carol Goodner
June MacKinnon
Frank Vosper
Lord Dean
Alfred Drayton
Manning
Campbell Gullan
Hannay
Percy Parsons
Casey
Fewlass Llewellyn
Sir Gregory
Henry Oscar
Raglan
Allan Jeayes
Grierson
Donald Calthrop
Macleod
Henry Caine
Bassett
George Carney
Mr. Lindsey
Jack Lambert
Police Inspector
John Laurie
Wages Accountant
Frederick Piper
Mr. McWilliams
Jack Raine
Testing Official