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.
The Caribbean Mystery is a remake of Mr. Moto on Danger Island (1939)-which in turn was a remake of Murder in Trinidad. James Dunn stars as Mr. Smith, a Columbo-like Brooklyn detective who pops up on a tropical island to track down some missing geologists.
Author/explorer John W. Vandercook conceived the character of Bertram Lynch as an investigator for the League of Nations. He is Trinidad's Port o' Spain trying to track down the leader of a gang of diamond smugglers. A trail, littered with murders, leads him to a crocodile-infested swamp.
