"Not just books?" But though he asked a question, Flynn was thoughtful, frowning as he considered the idea. In the Library back home the books were just books. But there were some artifacts that were books. And they were powerful books, hence why they were artifacts and in the Library.

"There's magic here," he concluded. "Yes, of course there is." He was thinking out loud and didn't really need anyone else to have a conversation with at the moment. "But the books... the books..." He considered ideas faster than he could articulate them. "The books are literally gateways to other worlds," he guessed in the end. "Then the danger exists not just from the books but from the actions you take in them."