This book was not bad.
I do believe it is rather for younger readers, but overall I did enjoy the creativity and the writing very much!
I will not fall over myself to grab the next installment, but if it flutters in my house I will most certainly read it.
The characters are generally likeable and well fleshed out and the time travel experience makes sense, which is a big deal, I find.
I would recommend this book to teenagers with a liking for supernatural literature. Even some adults may enjoy it as an easy read. It certainly makes for great travel reading. A book that one can leave on the train (something a friend of mine and her fiancee do with this sort of book, for someone else to find and enjoy. I rather like this practice!:)