They Came to Baghdad is a standalone adventure and spy thriller, published in 1951, that moves away from the confined manor house setting to embrace a global conspiracy. The story follows Victoria Jones, a bored young woman seeking excitement, who impulsively takes a job as a secretary in Baghdad. She soon stumbles into a web of international intrigue involving a secret society, a plot to sabotage a peace conference, and a dying spy whose last words send her on a dangerous chase across Iraq. The novel is characterized by its fast pace, exotic setting, and a more physical style of danger than Christie's usual works. It is a thrilling, espionage-focused story that successfully demonstrates Christie's versatility in the suspense genre, blending a resourceful, plucky amateur heroine with high-stakes international politics.