The Big Four

🧠 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. ...