Pocket Desert: Confessions of a Snake Killer: This personal documentary is the story of Teresa Marshall, who grew up on a British Columbia ranch. Every child needs a demon, and Teresa took battle against rattlesnakes. In the dry interior of B.C., the south Okanagan and Similkameen valleys form the bio-region known as Canada's "pocket desert." As settlers' dreams of creating an agricultural Eden erase fragile desert lands that support a breathtaking array of wild species, the narrator and her snake-hunting neighbours are forced to examine their environmental attitudes.