I was impressed with this book. It was faced paced and eerie to read. Kendare Blake does a great job with really making Anna scary, and the ghost story aspect in general scary. 
 Cas is a ghost hunter. He's been hunting them for 3 years, his father was a ghost hunter / killer before him, but was killed on the job when cas was only 7. Him and his mother move around from place to place in search of big bads who kill unsuspecting people. This time his search has taken him to Thunder Bay in Ontario Canada, to Anna Dressed in Blood. But when he gets there Anna is anything but a typical ghost spirit. 
 I don't really know how I felt about the story being told from Cas' point of view. Many times he seemed really full of himself, but I guess that's the point when he's been successfully hunting ghosts and winning for three years, and he's still a teenager. I didn't really mind his POV, but there were sometimes when I wanted him to get over himself just a little bit. Mainly when he first meets the secondary characters in the story (such as Thomas and Carmel). I don't know, his attitude just seemed like he figured he was better than them because he knew what was really out there in the world while they remained clueless in his eyes. I do think that this is something that goes away by the end of the book with everything that he and the others go through, so I'm interested to see if he changes any in the second book. 
 I really like Anna. She was definitely a tragic figure, yet she didn't brood about her circumstances. She was murdered when she was a teenager and now she haunts the house she lived in. She is definitely something to be feared. I liked that Kendare Blake didn't just write Anna as being "misunderstood" no there was no doubt that Anna was / is dangerous if crossed and will leave bodies lying around. It's good that Anna was just misinterpreted as a bad spirit and then when our characters get to know her find out it's false. No, it's true, which is why you shouldn't cross her. 
 I liked that a lot of the teen angst was left out. I've gone away from reading a lot of what is considered YA because they are just too full of angst that doesn't seem to go anywhere or ever get solved. Solution: make it about something else and Kendare Blake does a wonderful job of still including the tennage crushes and school clicks but they aren't the main focus by any means so they don't influence the story. 
 I look forward to reading the next Girl of Nightmares.