A criminal empire. Four unstoppable masterminds. And only one detective brilliant enough to match them-Hercule Poirot.
When a dying man collapses in Poirot's apartment, he leaves behind a cryptic warning about a secret organization known as The Big Four-a ruthless network capable of political sabotage, engineered disasters, and worldwide chaos. As Poirot investigates, he and Captain Hastings are drawn into a pulse-pounding chase across continents, unraveling clues, dodging traps, and confronting enemies who are always one step ahead.

Celebrated as "one of Christie's boldest and most thrilling Poirot adventures," this novel blends mystery with espionage, danger, and global intrigue. The stakes are higher, the puzzles sharper, and the villains unforgettable.

Perfect for readers who love fast-paced plots, daring escapes, and the unmatched charm of Poirot at his clever best.

Step into the conspiracy today-follow Poirot as he hunts the four most dangerous criminals in the world.