Chasing Vermeer by Blue Balliet

Do you like a good mystery book? Well, this just may be what you are looking for. When Petra finds a mysterious letter, the mystery begins. "Dear Friend: I would like your help in identifying a crime that is now centuries old." Unfortunately, the letter blows away before Petra can read the rest. Meanwhile, a priceless Vermeer painting on route to the Art Museum is stolen and the thief vows not to return the painting until the experts admit that some of the Vermeer paintings have been done by impostors. And Petra's new teacher takes a particular interest in the missing painting. And then there's Mrs. Sharpe whose husband was killed years ago after proclaiming he had new information about the Vermeer painting. And let's not forget Petra's new friend Calder. Just what is it about his pentominoes?