Sidney Toler
— Charlie Chan
Victor Sen Yung
— Jimmy Chan
Robert Weldon
— Steve Daniels
Sheila Ryan
— Kate Ransome
Truman Bradley
— Capt. Kane of the Suva Star
Donald Douglas
— Jed Thomasson
Kay Aldridge
— (as Katharine Aldridge) Laura Parks aka Laura Thursday
Paul McGrath
— Charles Parks aka Charles Thursday
Lenita Lane
— Dr. Anne Bonney
Milton Parsons
— Gene LaFarge
George Reeves
— Bill Lydig
Ethel Griffies
— Miss Patience Nodbury
Lee Tung Foo
— Ship's Cook (Uncredited)
Tim Ryan
— Bartender (Uncredited)
Stanley Andrews
— Insp. Vessey (Uncredited)
Charles Tannen
— Sailor with Girl (Uncredited)
John Wallace
— Peg-legged Sailor (Uncredited)
Jimmy Aubrey
— Dart Game Sailor (Uncredited)
Ralph Dunn
— Homicide Desk Sergeant (Uncredited)
Pat Flaherty
— Policeman with Checklist at Debarking (Uncredited)
Lee Phelps
— Detective (Uncredited)
Oscar 'Dutch' Hendrian
— Saloon Customer (Uncredited)
Paul Kruger
— Sailor in Saloon (Uncredited)
Brick Sullivan
— Police Sergeant (Uncredited)