Like a sizzling femme fatale, Diana Caldwell grazed her way through a stunning number of rich men, heartlessly giving up one just as she met another. It’s hard to say what she liked more: playboys with lots of money or older men with tons of money. When she and her husband arrived in Kenya’s Happy Valley, the coven of hedonistic aristocrats welcomed her as one of their own—and then she caused a scandal that would rock the world of even these debauched residents.