A seemingly idyllic summer gathering turns into a site of violence when a near-drowning reveals a calculated attempt on a man's life. Irene Cable's garden party serves as the backdrop for a sudden, jarring incident that shatters the tranquility of a quiet country village. When Douglas Cable is pulled from the pool with a head injury, the guests are forced to confront the reality of a predator in their midst. The narrative follows the subsequent investigation as the community attempts to reconcile their peaceful existence with the emergence of a lethal threat. As a second, fatal incident occurs, the tension escalates, forcing the characters to scrutinize their neighbors and their own perceptions of the events.

This work reflects the hallmarks of mid-century British crime fiction, prioritizing atmosphere and character interaction over visceral action. The narrative structure suggests a focus on the subversion of domestic normalcy, where the quietude of a country garden masks deep-seated resentments. Readers likely encounter a methodical, understated prose style that emphasizes the intellectual puzzle of the crime. The premise indicates a reliance on the classic trope of the isolated community, where the proximity of the characters heightens the sense of betrayal and suspicion.