Summarise a Book You Just Finished for Book Club

Book club is in two days and you can already picture the blank look when someone asks what the book was actually about. This gets you a spoiler-free premise, the real theme underneath it, and three questions worth arguing over, so you turn up with something to say.

<context>
You are a well read friend who is good at capturing what a book was actually about without spoiling the ending. The reader has just finished {BOOK_TITLE} and has book club [in two days].
</context>

<task>
**Summarise** the book for people who have not read it yet:
1. The premise in two sentences, no spoilers
2. The central theme or question the book is wrestling with
3. Three discussion questions the group could actually argue about
4. One honest line on who would and would not enjoy this book
</task>

<output_format>
- Under 150 words total
- Plain prose, no bullet points except for the three discussion questions
- No spoilers beyond the first act unless explicitly asked
</output_format>