It's been more than two months since I read this book, but I feel obligated to write reviews for every giveaway book I read, so here goes. 
 I liked this book more than the author's last book because that one featured some really graphic details of a violent rape. Emma in the Night had some messed up stuff going on, but it didn't feel as gratuitous. 
 I thought the perspective shift from Cass to Dr. Winter was a good choice. It was a good device for letting us know what was inside Cass' mind, but also how she and her family appeared from an outsider's perspective. 
 This novel reminded me a lot of Sharp Objects, except that I enjoyed Sharp Objects more. Gillian Flynn's books have this effortless quality to them, whereas this book felt like it was trying too hard. Trying too hard to be edgy, trying too hard to have an interesting psychological disease, trying too hard to be surprising. I could say the same about Walker's previous book, but this one felt more obvious to me because of the similarities to Sharp Objects. 
 I flew through this book, and I had a fun time reading it and discovering Cass' secrets.. I'll definitely check out any future books from this author. She does surprise twists well, and her books are thrilling. 
 I won this book in a Goodreads Giveaway.