In The Mixed-up Files of Mrs. Basil E. Frankweiler two kids named Claudia and Jamie run away to the Metropolitan Museum of Art in Manhattan by train. Their clothes are packed in instrument cases and they have some money. Life is good until one day while they are touring the museum they find a huge crowd around a new piece of art supposedly done by Michelangelo. They get interested in the statue and try to crack the mystery. They notice one night that a mark is on the silk cloth where the statue stood, and it is a M. They research the topic and find that the m is Michelangelo's mark. They then write a letter to the museum and told them. It happens that the museum already knows. Then Claudia wants to go to the ex-owner of the statue, her name is Mrs. Basil E. Frankwiler. So the two kids go in a taxi and ride to her private home out of the city. When they arrive they get cleaned up and soon go to work. They ask questions about the statue and then they have one hour to find a file about the work of Michelangelo to see if he made it or not, and Michelanglo did.

This book was very good. I liked it a lot. The book had good description because in the beginning of the book Claudia plans how she is going to run away to the Metropolitan Museum of Art and not to somewhere but to someplace. The book also had good characters because Claudia and Jamie are good thinkers and solve the case. The book also had good pacing because when they nearly find out who did the art work the chapter ends. The book had a good end because they find out that Michelangelo is the creator and they get to go home. I think that this book was worthy of the Newbery award because it was a exciting mystery that kept you reading till the end.