The Murder of Roger Ackroyd: A Hercule Poirot Mystery

That ending was chef's kiss

Ms Christie you have outdone yourself. I will never ever forget the loud gasp I let out after reading and rereading that ending.

I am stunned. I am out of words. Just wow.

 This is my first Agatha Christie novel and to say I had fun with it is an understatement.  It's really hard to talk about this book without spoilers but I will say that The Murder of Roger Ackroyd is a very well-constructed murder mystery that left me guessing up until the last moment.  Part of why it's fun is that the characters are all really interesting and suspicious in their own way.  You can see why anyone could be Roger Ackroyd's murderer and each piece of detail and dialogue leaves you thinking.  I am a lifelong consumer of fictional murder mystery media and part of the fun of consuming this type of content is figuring out why the creator would include certain details.  Christie is a master at this.  She leaves so many little nuggets of information sprinkled throughout the book that the reader has to decide which are relevant and which aren't.  As a result, I felt like I was playing along with the characters in the book.  While they were trying to figure out who the murderer was, I was trying to figure out what Christie was doing.  And yet I will admit that I was totally fooled.  The best mysteries are the ones in which you as a consumer feel like you got outsmarted by the creator in an honest way and Christie certainly got the better of me.  Every clue was laid out for me to piece the puzzle together but I didn't.  Well done Agatha, this is a classic for a reason.
 

The fact that Mountbatten tried to steal the credit for the concept behind it very much proves its worth.