Steve Backshall and the team are in the awesome flooded forest of the Amazon rainforest. It all kicks off in a flash when the crew spot a group of rare giant otters before they've even unpacked their cameras. They may be deadly, but they're not the only giants on his list; a chance encounter with the largest reptile in South America prompts a covert night-time stakeout with surprisingly good results. With the last place on the Deadly 60 up for grabs and time running out, it's a mad rush to end on a high, and nothing could prepare him for what he finds.