The Caribbean Mystery
Robert D. Webb
Jack Andrews (screenplay), Leonard Praskins (screenplay), Scott Darling (adaptation), John W. Vandercook (novel)
James Dunn as Mr. Smith, Sheila Ryan as Mrs. Jean Gilbert, Edward Ryan as Gerald McCracken, Jackie Paley as Linda Lane
"Mr. Smith, a Brooklyn police detective, arrives on a Caribbean island chasing a murderer ... and wades his way through quicksand, swamps, alligators, corpses, clues, unusual suspects and a frisky femme-fatale before nabbing the killer he was chasing." - IMDB
Note: based on the book .