The Lady Doth Protest Too Much
Despite Beckett's typical aversion to all things Castle, it's a fairly well-known fact that she is a big fan of his mysteries. But it's a bit of a shocker when we find out from Beckett's ex-boyfriend that it was Castle's books that helped get her through her mother's death. Of course, Beckett would never ever tell Castle this. We kind of wish she would though.