In Puerto Rico to investigate a glut of contraband diamonds that are flooding the world's jewel market, Mr. Moto and his sidekick, a wrestler, find themselves involved in murders by thrown daggers, the frame-up of an overstressed Army colonel, and a pirate gang led by an unknown boss who has inside knowledge of the ensuing investigation.
as Kentaro Moto
as Twister McGurk
as Joan Castle
as Lt. George Bentley
as Commissioner Madero
as Mr. Sutter
as Comdr. La Costa
as Police Commissioner Gordon
as Capt. Thomas Castle
as Gov. John Bentley
as Capt. Dahlen
as Grant
as Sailor Sam - Wrestler
as Moore - Governor's Aide
as Librarian
as Launch Pilot
as Mrs. Brown
as Doctor at Hospital
as Drunk
as Real Ambulance Intern
as Ship's Officer - Fight Referee
as Driver
as Cop with McGurk
as Carlos - Butler
as Ship Dispatch Officer
as Sailor at Wrestling Match
as Doctor
as Washington Official
as Sergeant holding McGurk at the Garage
as Officer
as Hotel Valet
as Hotel Valet
as Flirt at Dance
as Nurse
as Guard
as Henchman disguised as Ambulance Attendant
as Henchman disguised as Ambulance Attendant
as Sailor at Wrestling Match
as Real Ambulance Intern
