- Edgar Barrier
- John Usher / Robert Usher
- Stephanie Bachelor
- Sudan Ainger
- C. Aubrey Smith
- Sir Christopher Pelt
- Lionel Atwill
- Waterlow
- Henry Stephenson
- Sir Reginald Meade
- John Abbott
- Mortimer Cope
- Walter Kingsford
- Roylott Bevan
- Martin Kosleck
- Josef
- Forrester Harvey
- Alfred Morgan
- Frederick Worlock
- Mason
- Matthew Boulton
- Col. Hedley
- Bobby Cooper
- David Usher
- Louis V. Arco
- General Carl Eberling
- Edward Biby
- Sir Philip Gough
- Sven Hugo Borg
- Nazi Messenger
- Frank Brand
- Carl Eberling
- Leonard Carey
- Butler
- Kenne Duncan
- Steward
- William Edmunds
- Isaiah Thom
- Carl Ekberg
- German Cook
- Antonio Filauri
- Waiter
- Jack George
- Wine Waiter
- Frederick Giermann
- Hans Koebig
- Mary Gordon
- Libby the Housekeeper
- Sam Harris
- Undersecretary Borden
- Carey Harrison
- British Navy Officer
- Keith Hitchcock
- Insp. Chambers
- Nigel Horton
- Official of Communications
- Arthur Mulliner
- Lt. Col. Jardine
- William Nind
- English Waiter
- Richard Ryen
- Friedrich Eberling
- Jordan Shelley
- Larkworthy - Pilot
- Larry Steers
- Adm. Langley
- Arthur Stenning
- Insp. Collins
- Leslie Vincent
- Hardy - Co-Pilot
- Eric Wilton
- Gen. Sir Eric Holt
- Richard Woodruff
- Radioman
