I'm a massive Agatha Christie fan, but the marketing for this book was a bit deceptive - she's barely in it. To be frank, I would have given this a higher rating if Christie had been removed completely. Nan's story is a strong one, and would have been a great read on its own. Trying to stick this story into the real-life mystery of Christie's short disappearance in 1926 was just awkward, and threw off the pacing.