The Weed That Strings the Hangman's Bag (Alan Bradley)

A sequel to The Sweetness at the Bottom of the Pie, and equally charming. Eleven-year-old Flavia de Luce is fascinated by chemistry, poison, and death, and is an extremely astute observer of those around her in her little English town.these talents serve her well when a puppeteer is murdered in the midst of a performance, and allow her to solve not only this crime but an older one as well. Very enjoyable.