1. What children’s book about a young King Arthur, later animated by Walt Disney, is the first volume of 'The Once and Future King' series?

2. What hit 1989 novel is the story of Jing-Mei Woo, who gets asked to join her late mother’s weekly mah-jongg game?

3. What “Practical Guide to Improving Communication” in relationships was the top-selling nonfiction book of the 1990s?

4. Shailene Woodley starred as the cancer patient Hazel in the recent film of what YA bestseller?

5. Which of the Robert Langdon mystery novels begins with a curator being discovered dead in the Louvre Museum?

What’s the "Kennection" between all five answers?