Walter Pidgeon as Nick Carter

Donald Meek as Bartholomew

Joseph Schildkraut as Mr. Al Taurez

Florence Rice as Cora Barnes

Nat Pendleton as 'Gunboat' Jacklin

Cecil Kellaway as Franklin Morris

John Carroll as John Ramsell Jr.

Steffi Duna as Dolores

Dwight Frye as Eddie Anders

Matthew Boulton as John Ramsell Sr.

Harry Tyler as Cafe Waiter

Joe Yule as Sailor

Alec Craig as Andy MacMillan

Thomas W. Ross as Dr. Grisson

Hugh Beaumont as Seaman

Guy Bellis as Pierson - Sir Edward's Aide

Dick Botiller as Taurez's Henchman

John Burton as Steve Donnigan of Scotland Yard (uncredited)

Charles Coleman as U.S. Agent Hilton

Franco Corsaro as Ysidro - Morris' Head Clerk (uncredited)

George Douglas as Taurez's Henchman

Ralph Dunn as Port Policeman

Lee Tung Foo as Mr. Yamamoto

John George as Man in Cafe (uncredited)

Edward Hearn as Officer on the Orchid

Holmes Herbert as Sir Edward

Claire James as Pretty Girl at End

Kenner G. Kemp as Man in Cafe

William Lally as Port Inspector

Stanley Mann as First Mate

Florence Mannix as Telephone Operator

May McAvoy as Middle Telephone Operator

David Newell as Man in Cafe

David Newell as Telephone Operator

Nestor Paiva as Policeman at Morris' Office & at Finale

Dick Rich as Al's Henchman

Claire Rochelle as Woman Entertainer

Harold Schlickenmayer as Sailor

Harry Semels as Cafe Bartender

Cap Somers as Man in Cafe

William Stelling as Man in Cafe Flirting with Dolores

Harry Strang as Sailor in Cafe

Brick Sullivan as Henchman

William Tannen as Sailor

Charles Thomas as Sailor in Cafe

Jesús Topete as Hispanic Waiter

Chalky Williams as Bouncer

Beal Wong as Chinese Man in Cafe