Nick Carter
Bartholomew
Al Taurez
Cora Barnes
'Gunboat' Jacklin
John Ramsell, Jr
Dolores
Franklin Morris
John Ramsell, Sr (as Mathew Boulton)
Andy MacMillan
Dr. Grisson (as Thomas Ross)
Eddie Anders
Seaman (uncredited)
Pierson - Sir Edward's Aide (uncredited)
Taurez's Henchman (uncredited)
Steve Donnigan of Scotland Yard (uncredited)
U.S. Agent Hilton (uncredited)
Ysidro - Morris' Head Clerk (uncredited)
Port Policeman (uncredited)
Mr. Yamamoto (uncredited)
Man in Cafe (uncredited)
Officer on the Orchid (uncredited)
Sir Edward (uncredited)
Pretty Girl at End (uncredited)
Port Inspector (uncredited)
First Mate (uncredited)
Telephone Operator (uncredited)
Middle Telephone Operator (uncredited)
Policeman at Morris' Office & at Finale (uncredited)
Al's Henchman (uncredited)
Woman Entertainer (uncredited)
Sailor (uncredited)
Cafe Bartender (uncredited)
Man in Cafe Flirting with Dolores (uncredited)
Sailor in Cafe (uncredited)
Henchman (uncredited)
Hispanic Waiter (uncredited)
La Cita Cafe Waiter (uncredited)
Bouncer (uncredited)
Chinese Man in Cafe (uncredited)
Sailor on Blown Up Ship (uncredited)