When introducing the subject of the science fiction novel Bob wants to evaluate, it would make sense for him to include the following:
- the novel's title
- the setting
- the novel's genre
Including these elements gives the audience a clear understanding of what novel is being discussed and provides context for the evaluation.
Quotations from other reviewers and a complete plot summary may be useful in the body of the evaluation, but they are not essential for the initial introduction of the subject.