When a 16-foot great white invades Indonesia's warm coast of Bali, it sparks fears that they are adapting to hunt the tropical beaches where millions of people swim every day. Dr. Craig O'Connell and Madison Stewart are on a mission to find Tropic Jaws and discover why they left the cold water environment that they have called home for thousands of years.

Scientists in South America are studying the shark species thought to be responsible for a spike in deadly attacks since 1990. Marine biologist Danni Washington and shark conservationist Paul de Gelder join a team tracking tiger sharks off a pristine tropical archipelago in Brazil.

News of a harrowing shark encounter at North Carolina's Frying Pan Tower sends underwater cinematographer Andy Casagrande and shark expert Kori Burkhardt on a dangerous quest to discover whether great white sharks are moving into the state's waters.