The Big Four

A shadowy organization, a global threat, and a case that pushes detective Hercule Poirot into one of his most dangerous investigations.

When mysterious events begin unfolding across the world, it soon becomes clear that they are connected by something far more sinister than coincidence. At the center of it all lies "The Big Four"—a secretive group operating from the shadows with plans that threaten international stability. As deception spreads and identities blur, the truth becomes increasingly difficult to grasp.

Hercule Poirot is drawn into a complex web of espionage, disguise, and manipulation. Alongside unexpected allies, he works to uncover the masterminds behind the conspiracy. Each step forward reveals another layer of danger, where nothing is reliable and every clue could be a trap.

This fast-paced mystery blends detective fiction with elements of international intrigue, offering a different tone from traditional village or closed-room cases. Full of twists, hidden agendas, and dramatic revelations, it showcases Poirot in a battle against one of his most elusive enemies.

Written by Agatha Christie, this novel delivers suspense, action, and a larger-than-life mystery that keeps readers engaged until the final page.

Discover the conspiracy that spans the globe—download your copy today.

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E-book: 1 maja 2026