Tom Conway
Tom Martin
Michael Balfour
Barney
Honor Blackman
Paula Grant / Paula Jackson
Brian Worth
Johnny Matlock
Bruce Seton
Webb
Freddie Mills
Pat
Alexander Gauge
MacAllister
John Horsley
Michael Matlock
Paddy Webster
Diane Grant
John Colicos
First Kidnapper
Larry Taylor
Second Kidnapper
Arthur Lowe
Mitchell
Frederick Schrecker
Professor Dohlmann
Marianne Walla
Miss Freda Dohlmann
Russell Westwood
Berlin Man