There's a horrible little twinkle in his eye as this is all presented to him, looking flattered as if Robin had set the game up himself. Robin couldn't have gotten a better reaction if he'd gone out of his way to intentionally orchestrate a fun little surprise for him. A potential game of cat-and-mouse, all about him? How romantic.

"Do you think there are more of them?" He glances up at Robin's face in his quietly-building excitement, before looking over at the nightstand again.

"Though, I suppose if they had been fishing, and they hear about the disruption at the library, all they have to do now is go back and see which of their lures have gone missing."

Not that he's actually concerned, of course. His fingers drum one or twice wherever they're resting around Robin's side. "...Do you know where it leads?"