The Mysterious Affair at Styles by Agatha Christie is a masterfully woven tale of deception and intrigue, marking the debut of the iconic Belgian detective, Hercule Poirot. Set against the backdrop of an English country manor during World War I, the story unfolds with the sudden and suspicious death of wealthy heiress Emily Inglethorp. As Poirot applies his “little grey cells” to the case, secrets are uncovered, motives are revealed, and the puzzle pieces fall into place in an utterly unexpected climax. A timeless whodunit, this novel cemented Christie as the queen of mystery.