"Nothing," is Beckett's immediate reflex of a reply, but she knows all too well that it's not enough of an answer to satisfy Castle and he'll keep probing and prodding until he peels away the layers to get the one he wants.

True to form, he's watching her intently, and as she continues, her hand moves, inadvertently swaying the contents of the wine glass, and the smell hits her nose again.

"I just see the way that you listen to her, the way that you look at all of her fancy equipment. Now my murder board's not enough for you? Now you need a smart board?"