Jeremy Wade, biologist and extreme angler, is back with more investigations into the murky world of fishermen's tales. Jeremy investigates tales of frighteningly large and dangerous river monsters that have attacked and even killed humans. In this season, Wade catches the most bizarre and dangerous underwater creatures to inhabit earth, including a monster responsible for devouring certain male body parts in Papua, New Guinea, and packs of eels that will rip the flesh from unfortunate swimmers. Jeremy's search for the truth takes him on a dark and dangerous journey across the globe to reveal that the truth is every bit as unbelievable as the myth.