FROM THE MIXED UP FILES OF MRS. BASIC E. FRANKWEILER

Twelve-year-old Claudia Kincaid, straight-A student, has had enough of being good. She decides to run away, but it must be to somewhere beautiful - so she and her little brother Jamie (with the cash he won playing cards) sneak off to live in New York's Metropolitan Museum of Art.

There they sleep in a bed owned by a queen and bathe in a fountain with bronze dolphins. Most exciting of all, investigating a mysterious angel sets them on the trail of an eccentric old lady and a life-changing discovery. .