A mysterious late-night encounter with a dying man sets Hercule Poirot and Hastings on a global manhunt, delving into the enigmatic existence of "The Big Four." These include a Chinese mastermind and a mysterious figure known only as "the Destroyer." As they untangle a web of murders, scientific marvels, and a sinister crime cartel, the duo faces their most cryptic and perilous case yet, leading to a dramatic confrontation in an Italian stronghold.

The Big Four marks a departure in Agatha Christie's writing, delving into the realm of spy fiction with Hercule Poirot unraveling international intrigue. This novel emerged amidst the whirlwind of Christie's own mysterious disappearance, garnering significant public and commercial attention. Its success, fueled by the circumstances surrounding its release, hinted at Christie's potential versatility in genres beyond her renowned detective mysteries.

This case laminate collector's edition includes a Victorian inspired dust-jacket.