PERIL IN PARADISE! Frank, Joe, and Chet are off to Gull Island, Florida, and they don't have a moment to spare. Temperatures are rising, and troubles are brewing in the tropics. Chet's sister, Iola, while visiting a friend at the Royal Palms resort, has been kidnapped! The Hardys discover that the abduction is only the tip of a tidal crime wave. The trail to Iola is a treacherous one, leading Frank and Joe down alligator alley, through shark-infested waters, and straight into the heart of a deadly conspiracy - in which millions of dollars are at stake!