For the past four years, I’ve tried to read along with the reading plans hatched by the folks behind AgathaChristie.com. Each year I’ve not completed all twelve books but I’m always game for a themed list like this that carries a reader throughout the year so I’m giving this year’s list a try. Unlike past lists that were, say, arranged by styles of murders, this year is simply chronological, and it begins at the beginning. The Time Period The Mysterious Affair at Styles is not only the first time we’re introduced to famed detective, Hercule Poirot, and his friend, Arthur Hastings, but it also is the first book Christie ever…