I THINK ONE OF DADDY'S LITTLE GIRLS KILLED HIM.For the four glamorous daughters of Lord Oswald Balcon, money can buy anything. From Fendi handbags to Ivy League educations, they live in a world of designer labels and unrestricted opulence -- their father's money and aristocratic status, coupled with their dazzling good looks, bought them every opportunity and advantage. They are beautiful, blond, and barely thirty, and the world is their luxury playground. Venetia, the sophisticated interior designer, has booming professional success but is desperate for a child and an escape from a loveless marriage. Camilla, the rising political star, is too brilliant and ambitious for any of her unworthy lovers to handle. Sweet yet savvy Cate is living out her ultimate dream, launching her own magazine, with an all-too-handsome business partner. The baby of the family, Serena, is one of the country's most beautiful actresses, on the cusp of international stardom, but her party-girl lifestyle is b