New York City girl Claudia, a month shy of her twelfth birthday, has resolved to run away from home with her younger brother, Jamie. She plans everything to perfection, including their destination: the grand, elegant, all-encompassing Metropolitan Museum of Art. However, no sooner have Claudia and Jamie settled into their new home, than they are caught up in the mystery of an angel statue bought by the museum for the bargain price of $225. Is it in fact an undiscovered work by Michelangelo, worth millions? Claudia's investigation leads her to the remarkable, secretive Mrs. Frankweiler, who sold the statue to the museum - and to some equally remarkable discoveries about herself. Since its first appearance over 50 years ago, The Mixed-up Files of Mrs. Basil E. Frankweiler has gained a place in the hearts of generations of readers, becoming one of the most celebrated and beloved children's books of all time.