All Hallow's Read - Day 25

Last year I bought my niece, Mia, a book for All Hallow's Read, a tradition started by Neil Gaiman, author of Sandman series and lots of other wonderfulness. I think it is a brilliant idea for kids, first, just to read something slightly spooky in October and to associate Hallowe'en with storytelling. So I gave her this year's read this weekend. It was The School for Good and Evil by Soman Chainani. It's a book laced with fairy tales starring two strong young female characters. I think she'll love it.

If you were going to buy a kid a book, what book would it be - let me know the age range of the book and the title and author.