I'm not terribly shy about suggesting books to people. Y'know, because I'm not opinionated at all. Anyway, one that I always recommend is:The problem that I've found with this story is that it's a little slow-starting. I promise, though, that you will absolutely fall in love with Flavia, the main character. She is one of the most endearing child characters I've ever read.
This book is a decent mystery, and the start of a series (I have yet to read the rest... they're buried somewhere in the middle of my "to read" pile).