I have loved Ms. Shepherd's YA stories and I was curious to read one of her MG. It did not disappoint at all! 
 The premise of the story was an interesting one. Winged horses can be seen in the mirrors of the hospital that the children live at. But only one child can see them and when one of the horses comes out of the mirrors, this sends her on an adventure to save him. 
 I really enjoyed the story line and could imagine myself as a young child loving this story just as much! I really felt for the children that lived in this house, they not only had to deal with their own illness but dealt with the illness of their peers also. 
 I must gush over this cover a bit! This is one of the most beautiful covers that I had ever seen and if I saw this book on a random shelf in a book store....I would be sure to pick it up! I love the colors that were used and the image inside of an image. 
 This book was filled with drama, loss and hope. I enjoyed every minute of it and did not want to put it down. I would recommend it for a more mature middle schooler since there is some dealings with death but I highly recommend it!