I purchased this book because I have been enjoying books that contain familiar characters, but in a different context. Most notably, books by Jasper Fforde-both the literary Thursday Next series that brings the classics in, and the Nursery Crime series which brings mystery into everyday nursery rhymes.
The book starts out with a pair of girls, sisters and orphans. They're on the train to meet their grandmother, whom they have believed to have been dead. Once you've been introduced to the characters, the interaction amongst fairy tale characters begins. The girls and their grandmother are investigating a house 'explosion' when Mr. Charming (also known as Prince Charming) shows up on the scene. Jack of Jack and the Beanstalk becomes a character of note, and readers are quickly trying to remember the different Grimms tales that they've read as children. (And other fairy tales/nursery rhymes as well.)
As an adult, I found this book to be a quick read, and I did enjoy it. Given that the suggested reading level is for grades 3-6, I find it right on par. Enough interest to engage the younger reader, but also enough to also entertain even the oldest of readers. I look forward to continuing the series