Adventure, suspense, detection, and humor are involved when 12-year-old Claudia and her younger brother elude the security guards and live for a week in New York's Metropolitan Museum of Art. When Claudia decided to run away, she planned very carefully She would be gone just long enough to teach her parents a lesson in Claudia appreciation. And she would live in comfort-at the Metropolitan Museum of Art. She invited her brother Jamie to go, too, mostly...