A seemingly idyllic garden party turns into a scene of violence when a guest is discovered unconscious in a swimming pool, triggering a series of lethal events. Catherine Gifford finds herself entangled in the investigation after witnessing a chaotic moment that leaves her questioning her own perceptions. As the quiet country village becomes the site of an attempted murder and a subsequent homicide, the social veneer of the community begins to fracture. The narrative follows the efforts to uncover the truth behind the attacks, navigating the complex relationships and hidden motives of the attendees.

Elizabeth Ferrars is recognized for her ability to craft intricate puzzles within the confines of polite society. The narrative structure relies on the subtle interplay between character motivations and the physical constraints of the setting. Readers often note the author's precise prose and her talent for creating tension through domestic interactions rather than overt action. The mystery functions as a study of how quickly a stable environment can descend into suspicion and paranoia when a crime occurs.