Kenya in its golden age, the safest, sexiest and most wildly popular playground in Africa. Westerners flock there. There is just one problem: Westerners have also been dying there. Now and then, here and there, one or two, in the most bizarre and chilling ways. While Kenya's top investigators triangulate theories, word on the street has had the mystery figured out all along: a witch is at work, there could be no other explanation. It's "orogi," the darkest kind of ancient magical harm. No one wants to mess with this woman. The Nairobi tabloids have dubbed her Mama Mamba (Crocodile Woman). Her...