A Tale Dark and Grimm by Adam Gidwitz
This starts out as a retelling of the Hansel and Gretel story, and then goes beyond that into what happened after-and before- and woven between.  The author takes a number of tales by the Grimm brothers and links them together in a previously unseen way.  The writing is well thought out and makes you think about "fairy tales" in a different than in the norm.  If you don't mind realizing exactly how dark some of these tales actually are, i highly recommend this book.
Not for the easily frightened or those who prefer thin fairy-tales free of sadness, death, and hard choices.
I give this book 5 stars.
Rosha C.