The Solution

The Solution is to take a trip to Connecticut to see the really owner of the angel statue, Mrs. Basil E. Frankweiler. They take a train to see her to see if she has a file of the document that says Michelangelo did it. They go in her house and meet her. They go in her office with her more than a million files and they make a deal with her that if Claudia and Jaime tell her why they ran away she will let them look for the file. So they look for the file and after 1 hour they find it and find out Michelangelo did it!