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.
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CAST
Peter Lorre
Kentaro Moto
Warren Hymer
Twister McGurk
Amanda Duff
Joan Castle
Robert Lowery
Lt. George Bentley
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