

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.
Mr. Moto in Danger Island was directed by Herbert I. Leeds.
Mr. Moto in Danger Island runs for 1h 4min, and was released in 1939.
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