? Four ruthless masterminds. One brilliant detective. A race against time to stop a worldwide catastrophe.

In The Big Four, Agatha Christie thrusts Hercule Poirot into one of his most dangerous cases yet. When a man collapses at Poirot's door—muttering about "The Big Four"—the legendary Belgian detective is drawn into a sprawling conspiracy involving espionage, murder, and global domination.

This is no ordinary murder mystery. Poirot and his loyal companion Captain Hastings face a mysterious international syndicate led by four powerful criminals: a brilliant Chinese mastermind, a French woman with no moral code, a ruthless American millionaire, and a silent killer who never fails.

Can Poirot's meticulous reasoning unravel the tangled web of lies and betrayal before the Big Four succeed in their plot?

? Why readers love this Poirot mystery:

A unique Christie novel with spy-thriller energy

Introduces a shadowy villain group never before seen in the series

Explores Poirot's intellect under pressure in an international setting

Ideal blend of classic detection and suspense-driven action

? Perfect for readers who enjoy:

Hercule Poirot's detective series

International crime thrillers

Conspiracy and espionage fiction

Fast-paced plots with psychological tension

? What readers are saying:

"Poirot meets James Bond—an intriguing twist to Christie's detective formula." – Classic Mystery Review

"Clever, ambitious, and more action-packed than usual. A must-read for Christie fans." – Amazon Reviewer

? Click "Buy Now" and follow Hercule Poirot as he battles the world's deadliest criminal minds.