Jeremy Wade heads to The Mekong River in Thailand in search of one of the world's largest, most terrifying river fish, the Giant Freshwater Stingray. Armed with a venomous 10 inch barbed tail, this 700-pound monster tests Jeremy to his physical limit.

Jeremy Wade travels to one of the few rivers left on earth that will still test a fisherman. The Congo, a river steeped in legends, and soaked in violence. One spirit in particular is said to lure fishermen from their boats to their death.