From the Mixed-Up Files of Mrs. Basil E. Frankweiler

When Claudia decided to run away, she planned very carefully. She would be gone for 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 because he was a miser and would have money.

The two took up residence in the museum right on schedule. But once the fun of settling in was over, Claudia had two unexpected problems; she felt just the same, and she wanted to feel different; and she found a statue at the museum so beautiful she could not go home until she had discovered its maker, a question that baffled even the experts. The former owner of the statue was Mrs. Basil E. Frankweiler. And without her help Claudia might never have found a way to go home.