The book was exceptionally written. I did feel that the plot was slow paced since it was a psychological investigation and Poirot had to take everyone's account of the case but at the end of every units the book becomes more and more thrilling to read. It might not have the thrill of 'And Then There Were None' and 'Murder of Roger Ackroyd' but Agatha's novels always have an ending that would blow everyone's minds.