The subtitle of The Beach makes a promise: the past never stays buried. The mystery begins with a recent disappearance, but its description points to a longer history.
The victim is the daughter of the Japanese manager of a local sugar mill. Her death exposes racial tensions and resentments connected to the war. Annersley must investigate three young men while navigating those tensions and the involvement of Military Police.
Those circumstances invite readers to distinguish evidence from assumption. What does a community believe because something is known, and what does it believe because an old resentment makes a story convenient?
That is a question for discussion rather than a conclusion about the novel. Follow the investigation, pay attention to whose account is trusted, and see how the answers change.