I wonder why though. It just makes me wonder what this place is hiding from us...

[Which he wouldn't be surprised. However, based on the way Ken said it, there was a slight hint of anger and worry at the same time. He really didn't want this place to hide any secrets from him.

Shaking his head, he kept looking for the bookshelves.]

I think the more important question is what the librarian is intending to do with that information anyway.