If your paper is for a literary theory class, it may focus on Kermode’s The Sense of an Ending: Studies in the Theory of Fiction .
The novel is a psychological study of memory, aging, and the stories we tell ourselves to justify our past.
: The novel famously defines history as "that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation". Your paper could explore how the "mystery" of the plot—the true nature of Adrian’s suicide and his relationship with Veronica’s family—serves as a metaphor for the impossibility of objective truth.