The Night Country by Melissa Albert

This is the second book in the series and even darker and more mysterious than THE HAZEL WOOD. Alice is back from her other world and living half a life in London. She meets up with others from that world that have escaped but soon discovers that they are being picked off by a monster. She and Finch must find out what is going on and try to stop this new more dangerous world from being formed. A darker side of Narnia and all the best elements of gothic fairy tales, Melissa Albert creates a mysterious world that is as breathtaking and seductive as it is dangerous. For young adults but adults who love dark fantasy will leap into this with both feet.