Disclaimer: I read this book as an advance copy from Netgalley. My thanks go to them, Random House UK, Ebury Press and to the author, Riley Sager, for this opportunity. The opinions stated in the review are my own. This is one of the best thrillers I've read! The book has wonderfully complex characters as well as a compulsive reading plot. The author takes the movie trope of a Final Girl, the lone survivor of a terrible event, and makes her the focus of this book. Quincy is already dealing with the aftermath of a massacre that killed her friends some years ago when a new threat is found at her door. The book starts slowly, giving the reader time to allow musing on the different ways of handling trauma and grief. The pressure builds to revelations that pull you down a rabbit hole of theories and red herrings. The protagonist was very interesting to watch as she works to unwind the memories she hasn't been able to access since that terrible day and tries to handle t...