I received this book from NetGalley in exchange for an honest review here and on my blog Samwise Reviews. I loved this; I read most of the book in a single day. Just like The Last House Guest, Megan Miranda has put together another amazing thriller. I really enjoyed how you kept learning new facts about both events slowly, as the character did, and it was impossible to predict the ending. The story is split between two cases, how Arden went missing while sleepwalking and the body that Olivia found now. Each chapter has a section of police report or interview dating back 20 years to Widow Hills, which I found slowed down the plot a little, but it was interesting to see what people were saying at the time and it becomes relevant later. Overall I thought the whole premise was fascinating and Arden/Olivia was a really believable character.