Steve Backshall and his long-suffering crew return for a series of deadly encounters with animals hoping to earn a place on his hallowed Deadly 60 list. Steve and the crew have almost come to the end of their journey to find the Deadly 60. They are in Peru, searching for elusive giant river otters. Steve has a chance encounter with the largest reptile in South America, and nothing prepares him for the animal that takes the last place on the Deadly 60 list!