Explore the hidden lives of three of the most dangerous predators on the planet with NATURE's Big Cats. Featuring some of the most fearsome and beautiful big cats - lions, leopards, and tigers - these four films explore the cats' struggle for survival and our ongoing fascination with these incredible creatures. Elsa's Legacy: Behind the wildly popular Born Free book and movie lies the real story of the orphaned lion cub, Elsa, raised by George and Joy Adamson before being released back in the wild. Now, a rare glimpse into the diaries, home movies, and detailed records the couple kept reveals an intimate look at their pioneering work and our appreciation for the animal kingdom. Revealing the Leopard: Leopards are the ultimate cat - the most feline, the most intelligent, the most dangerous, and one of the least understood. From the Middle East to Sri Lanka, see how these most cunning of cats rarely move without a premeditated strategy. Siberian Tiger Quest: Hunted almost to extinction, the last wild Siberian tigers can only be found in the forests of the far eastern Russian frontier. Ecologist Chris Morgan embarks on a challenge that will fulfill a lifelong dream - to find and film a Siberian tiger living wild and free in these forests. The White Lions: White lions are among the rarest and most treasured animals in the world, though their ghostly color is both a blessing and a curse due to their high visibility. Follow the story of two remarkable white lion cubs as they struggle for survival on the savanna.