Agatha Christie is brilliant, as always. Although this was not one of her best (my opinion), it was very intriguing and I couldn’t put it down. The Big Four are diabolical masterminds who could, potentially, take over the world, but they hadn’t bargained on Hercule Poirot’s genius. The Big Four put Poirot to the test, and page after page I had to know who had won the next round – it was Big Four vs. Poirot all the way, and I don’t want to give the book away by letting you know who won. 🙂 All in all, amazing book. Great read.