If you like detective novels, I recommend the Flavia De Luce mysteries by Alan Bradley. The heroine, eleven year old Flavia, is a precocious young chemist and aspiring detective. She is a delight, and for the most part, a convincing eleven year old. She is sometimes wise beyond her years, but she also acts her age, particularly when it comes to tormenting her two older sisters. Despite the fact that Flavia's home is in the seemingly peaceful English town, Bishop's Lacey, she always manages to get involved with a murder mystery. There are four Flavia mysteries so far, and they do not necessarily need to be read in order. If you prefer audiobooks, they are a pleasure to listen to as well!