A cryptic message from their famous detective father and a note concealed in a ventriloquist's dummy lead Frank and Joe Hardy on a dangerous search to the tropical islands in the Caribbean.
A cryptic note from their father leads the Hardy boys to the Caribbean where they must solve the mystery, but only if they can successfully evade the henchmen who are trailing them.
A cryptic message from their famous detective father and a note secreted in a ventriloquist's dummy lead Frank Hardy on a dangerous search to the tropical islands in the Caribbean.