When a wealthy businessman is found murdered on a French golf course, Hercule Poirot must navigate a web of deception to identify a killer who strikes with chilling precision. Poirot arrives in France at the behest of his client, only to find the man already dead and buried in a shallow grave. He is immediately confronted by a series of baffling clues, including a misplaced overcoat and a mysterious love letter, which complicate the investigation. As the detective attempts to untangle the victim's past, the sudden appearance of a second, similarly murdered body forces him to re-evaluate his entire theory of the crime. The narrative unfolds through a classic third-person perspective, emphasizing the methodical deduction required to solve the puzzle.

This novel is widely recognized as a foundational entry in the Hercule Poirot series, showcasing Christie's early mastery of the complex puzzle mystery. Readers often highlight the cleverness of the dual-murder plot and the way it challenges the detective's analytical capabilities. The setting of the French golf course provides a distinct atmosphere that contrasts effectively with the grim nature of the crimes committed. It remains a staple for those interested in the evolution of the golden age detective story and the refinement of the whodunit format.