They are the big, the bold and arguably the most majestic of the snake world... Super sleuths, silent yet deadly predators that squeeze the life out of their victims. In this extraordinary one-hour documentary, we explore the natural history of some of the largest living snakes in the world - the constrictors! We reveal their devastatingly effective hunting strategies, incredible digestive processes, and intriguing mating rituals. Slithering through all four corners of the globe, this journey is not for the faint hearted.