Hercule Poirot is drawn into a chilling international conspiracy when a series of baffling deaths, thefts and political intrigues point to the existence of a shadowy cabal known only as the Big Four. With Captain Hastings at his side, Poirot must outwit a quartet of cunning masterminds whose reach spans continents, weaving exotic locales, cryptic clues and daring escapes into a breathless race against time. Christie blends razor-sharp deduction with thriller pacing, delivering a globe-trotting, high-stakes puzzle that showcases Poirot’s brilliant mind while preserving the suspense and twists that make her mysteries irresistible.