Flavia de Luce. In my opinion, she is the most original literary character to come along in years. She is the heroine of a series of books by Alan Bradley. This is from the Flavia web site.
If you have never read any of these books, start with the first one, The Sweetness at the Bottom of the Pie. I Just finished Speaking from Among the Bones, which ended with a cliff-hanger. According to Amazon.com, I am going to have to wait until the next Flavia book comes out in January to find out what happens next!