- Matthew Boulton - John Ramsell Sr.
- Harry Tyler - Cafe Waiter
- Joe Yule - Sailor
- Alec Craig - Andy MacMillan
- Thomas W. Ross - Dr. Grisson
- Hugh Beaumont - Seaman
- Guy Bellis - Pierson - Sir Edward's Aide
- Dick Botiller - Taurez's Henchman
- John Burton - Steve Donnigan of Scotland Yard (uncredited)
- Charles Coleman - U.S. Agent Hilton
- Franco Corsaro - Ysidro - Morris' Head Clerk (uncredited)
- George Douglas - Taurez's Henchman
- Ralph Dunn - Port Policeman
- Lee Tung Foo - Mr. Yamamoto
- John George - Man in Cafe (uncredited)
- Edward Hearn - Officer on the Orchid
- Holmes Herbert - Sir Edward
- Claire James - Pretty Girl at End
- Kenner G. Kemp - Man in Cafe
- William Lally - Port Inspector
- Stanley Mann - First Mate
- Florence Mannix - Telephone Operator
- May McAvoy - Middle Telephone Operator
- David Newell - Man in Cafe
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Avril E. Russell
Capítulo disponible en las siguientes plataformas:
