Casts
Terence Morgan
as Inspector Ralph Brown
Yolande Donlan
as Jill Wilson
André Morell
as Robert Isaac Pitt
Reginald Beckwith
as Harold
Ursula Howells
as Antonia Pitt
Basil Dignam
as Wing Commander Riddle
Fred Johnson
as Professor Robinson-Heston
Arnold Marlé
as Karl Kopek
Mark Dignam
as Prison Governor
John Horsley
as Assistant Commissioner
