Whose Hellos Are These, Anyway?

You are the reluctant keeper of a small-town library famous for its vast collection of unreturned books. One fateful morning, you arrive to find an entire shelf of mysterious 'Hello' notes tucked inside various novels. Each note hints at a bizarre local mystery or historical event, and it's up to you to decipher them. As you engage with quirky characters based on town legends, you'll uncover secrets, solve puzzles, and unravel a web of bizarre connections that intertwine with the lives of the townsfolk. Can you follow these cryptic greetings to the heart of their origin, or will the town’s eccentricities swallow you whole?