The Hardy brothers' search for the missing son of a wealthy industrialist leads them to Brazil and great danger. Chet's hobby at the time was retrieving golf balls from the bottom of ponds at the golf courses around the Bayport area. Chet's hobby brings important clues that help the Hardys round up a gang of criminals who help other criminals change their identity.
Characters
Joe Hardy, Frank Hardy, Fenton Hardy, Laura Hardy, Aunt Gertrude, Chester Morton, J.G Retson, Phil, Tony, Joachim San Marten, Gus McCormick, Mr Jackson, Mrs Martha Jackson, Harris, Harry Grimsel, Sam Radley, Belkin, Moreno.
