this book caught my eye when it came up in the "also boughts" section for Bride of the Midnight King. I'm always interested in fairy tale retellings, and especially interested when writers venture away from the same three or four stories that get told over and over. (Beauty and the Beast, I'm looking at you!)
I've never actually seen Swan Lake performend; probably the closest is watching Black Swan, but the story really does have all the elements. This one goes on the TBR pile.