The Big Four

HERCULE POIROT FACES HIS MOST DANGEROUS CASE YET

When a dying man crashes into Poirot's apartment with a warning about "The Big Four," the Belgian detective is thrust into a global conspiracy unlike anything in his career. This rare espionage thriller from Agatha Christie transforms her methodical sleuth into the world's last defense against tyranny.

Follow Poirot as he confronts an enemy more terrifying than any murderer:

Four criminal masterminds with a plan for world domination
A shadowy network reaching from London's slums to mountain fortresses
Deadly new weapons that could devastate entire nations
A master of disguise who could be anyone, anywhere, at any time
As scientists disappear and bodies accumulate across Europe, Poirot and Hastings find themselves outmatched and outmaneuvered at every turn. When Poirot himself vanishes, the chase becomes desperate—forcing Hastings to carry on alone against impossible odds.

This unique entry in Agatha Christie's legendary crime mystery books combines her unparalleled plotting with the high-stakes action of a spy thriller. Each chapter brings new dangers, coded messages, and brushes with death as Poirot's "little gray cells" face their ultimate test.

Agatha Christie

1890 - 1976

Agatha Christie (1890–1976) was a British author best known for her detective novels, particularly those featuring Hercule Poirot and Miss Marple. Often referred to as the "Queen of Crime," she wrote 66 detective novels, 14 short story collections, and the world's longest-running play, The Mousetrap. Her books have sold over …