More specifically, it explores themes of:
* Isolation and Suspense: The story takes place on a remote island, trapping the characters together and amplifying the suspense as the murders occur.
* Guilt and Punishment: The characters are all tied to past crimes, and the murders are a form of retribution.
* The Nature of Justice: The novel explores the complexities of justice and whether revenge is justified.
* The Power of Deception: The killer is a master manipulator, deceiving the characters and leading them to their deaths.
While the novel focuses on murder and intrigue, it also touches on themes of human nature, morality, and the consequences of past actions.