Here is the summary of the book:
It's been months since the ghost of Anna Korlov opened a door to Hell in her basement and disappeared into it, but ghost-hunter Cas Lowood can't move on.
His friends remind him that Anna sacrificed herself so that Cas could live—not walk around half dead. He knows they're right, but in Cas's eyes, no living girl he meets can compare to the dead girl he fell in love with.
Now he's seeing Anna everywhere: sometimes when he's asleep and sometimes in waking nightmares. But something is very wrong...these aren't just daydreams. Anna seems tortured, torn apart in new and ever more gruesome ways every time she appears.
Cas doesn't know what happened to Anna when she disappeared into Hell, but he knows she doesn't deserve whatever is happening to her now. Anna saved Cas more than once, and it's time for him to return the favor.
Begins where 'Anna Dressed in Blood' left off. And must say 'Girl of Nightmares' is a change of pace. Wherein the first book, Anna Korlov throughly spooked us with her vicious after life tendencies, at the end saving Cas and his friends lives against the Obeman..... And don't forget the effort Cas put in catching her.... it was definitely the perfect Halloween read..... But what progressed was the point that never sits well with me..... the romance between a ghost and a living being.
Still Girl of Nightmares was a change of pace purely because Cas is not hunting ghosts this time but answers.He knows Anna is in hell or wherever the knife sends them but so is the Obeman and he wants to get her out of there.
While the change of pace puts the spook factor to a lower degree but what I liked of this book was that we found out more about Cas' history or more probably on that of the knife and just how dangerous it actually was. Kendare Blake presents a much subdued and calm finale to her ghostly saga..... but worry not you will find all the ghosts, secret societies and action you desire out of this book.
"An intense unraveling and action-packed finale"