I really liked how the book switched between the present story and the transcripts of interviews from the past, as it means as the reader has to read more of the story to unravel the mystery of her past. The author also kept dropping hints to maintain the suspense - which made me really want to keep reading. I also thought it was an interesting perspective, and the use of first person really helps you get into Olivia's head, and understand the trauma she's been through and how frustrating it must be for her trying to move on. Because she's so paranoid, everything that's out of place puts her on edge, and as a reader begin to get apprehensive about every detail as you learn more and more. Overall a really intriguing book that you won't be able to put down!