What a mind puzzle this one is! Even before the story begins, Agatha Christie sets us up. In her foreword, she tells us there are only four suspects, and “any one of them, given the right circumstances, might have committed the crime. The twist is,
They are four widely divergent types, the motive that drives each one of them to crime is peculiar to that person, and each one would employ a different method. The deduction must, therefore, be entirely psychological, but it is none the less interesting for that, because when all is said and done it is the mind of the murderer that is of supreme interest.
The premise is simple: Mr Shaitana hosts a dinner party where he hosts four murderers (Dr Roberts, Mrs Lorrimer, Major Despard, and Miss Meredith) and four detectives (Hercule Poirot, Superintendent Battle, Colonel Race, and Ariadne Oliver). Before the end of the evening, Mr Shaitana is killed. Which of the four murderers did it?
(I should note that the four suspects are only alleged murderers. None have been convicted, and in fact, their appeal to Mr Shaitana is that while he believes all four are guilty, none of them have ever actually been accused of the crime.)

Starting my adventure with hot chocolate and a brand new chapter in my detective notebook
As part of my project to solve Agatha Christie mysteries, Cards on the Table is structured perfectly for the task. Each of the four suspects is interviewed in turn, and all four detectives openly discuss their clues and theories with each other. Even the chapters make it easy to keep up: each chapter is titled with the name of the suspect currently being interviewed or the name of a side character giving a new clue. In fact, a major challenge for this project was knowing where to stop before I locked in my final guess.
I accidentally read a fairly pivotal late-chapter reveal that made me rethink my main suspect and motive, but at least Poirot was right there acting as confused as I was. As I write this, I’ve stopped reading, because something else was revealed, and I realize I’m in the end zone. So far, Poirot’s responses seem to be aligned with mine, so that gives me hope that perhaps I’m on the right track. All to say, I’m ready to lock in my answer, and will share my thinking below the SPOILERS tag.
Conclusion
Bahhhh foiled again! At least I was close?
Okay, Dame Agatha, well-played. I had all the cards, but ultimately, I read them wrong.
For anyone keeping track, the score is currently Literary Treats 1, Agatha Christie 2. So I’m on the board, at least, and honestly, this was a lot of fun! I enjoyed the methodical way this case unfolded, and the tricky mind games I kept trying to untangle.
I know better now, I said. The Queen of Crime will not best me twice, I said. Besides, I said, look at those yummy tea cakes on the cover! How hard can solving this mystery be?
Inspired by 
