This was my first Agatha Christie novel and it did not disappoint. Before beginning the book, I read a review that said "You will not guess the murderer!" which I took as a personal challenge, but that reviewer was right. I love it when that happens. 
 While the ending was both shocking and satisfying, the real enjoyment of this book for me came in its witty dialogue and the masterful storytelling that kept me questioning everything and everyone. I will certainly be reading more Christie-- after I go back and read this one to catch all the cleverly-planted clues I missed the first time.