It's the stuff of nightmares, a killer snake of immense size and strength, with a strike faster than the blink of an eye. She's 20-feet long. She has no hands, no arms, no legs, but she'll crush you to death in 15 minutes. She's an African rock python and she's queen of the constrictors - snakes that squeeze for a living. On the Savannah of South Africa, she goes about her daily business, but the details of her life are never observed. This is her story.