"Curtain - Poirot's Last Case" by Agatha Christie is another one of this author's must-reads. The reader is hooked from the start of the story as Hercule Poirot and his friend, Arthur Hastings, travel back to the location of their first case to face their most formidable enemy yet. Not only does this story incorporate Christie's signature touch, filling the reader with suspense and leaving them wanting more, but it also plays into the reader's emotional connections with the characters they have read so much about.
I have been obsessed with Agatha Christie and her timeless mysteries for a while now, and have fallen in love with Poirot, Hastings, and many more of her amazing characters. I recommend reading Curtain after enjoying some of Christie's other Poirot mysteries (especially Poirot's first case, "The Mysterious Affair At Styles"), as I had fallen in love with the character so much that the ending left me in tears. Each of her mysteries is both distinctive and flawless, each plot point perfectly executed.