So many times I thought I had figured out this book. I thought I knew who took Astrid, what Fern's role was in that first disappearance, why Astrid may have been taken again. And then second guessed what I thought. This book is about Fern, who is dealing with a lot of anxiety, when she sees a news report on a woman, Astrid, who's been kidnapped for a second time. She recognizes Astrid, but doesn't know why. Astrid was kidnapped 20 years ago, from a town close to where Fern grew up, and when Fern returns to her hometown to help her retired, physiologist, father pack for a move, and begins to read Astrid's memoir about her first disappearance, Fern starts remembering things that might help solve the original kidnapping, and in turn help save Astrid now.This book was really good. It grabbed my attention and, like I mentioned, kept me guessing the whole way through. In the end, I had figured it out at one point, but then kept reading and changed my 'guess'. I really enjoyed this book!