[... Alright, clearly this is a v. nefarious person out to do NO GOOD!!1 he should stay on guard!!!!
aka... he's relaxing after a moment. Not looking particularly happy, but at least less like he wants to punch something or get randomly defensive over a collection of books and notes.]
[Still, he's shaking his head] They're not mine. They we-- [were? no..]
They belong to Robin. [....] She's not in this place right now. That's all. She must have... had them out before.