At first, I found this book to be really depressing. The author paints such a detailed picture of her life in the cabin that you feel like you're really right there with her. I started to really feel her anxiety or terror. I thought that maybe I made a poor choice of book since I typically read more lighthearted books even the mysteries I choose are pretty light. But as the story progressed I was excited and thrilled to find out how she escapes. After she did... there was still a lot of pages left in the book and I was like "where else is this going"? I was worried the rest would just be boring, mundane things that she daily, fighting her paranoia. But, man it wasn't! I was not expecting the twist this book took and I wasn't expecting it to turn into a mystery trying to figure out "whodunit" per se. Wow, great twists and turns. I was stunned, shocked, and angered by the ending!