With Detective Beckett’s secret — the fact that she heard Castle’s post-shooting “I love you” — kinda-sorta out in the open, we all know it’s only a matter of time until Castle’s own dirty little secret will bubble up. What will it mean for our two leads?

Castle chose to silently snub the brunette beauty in the wake of hearing her confession (still unbeknownst to her), but it’s hard to say whether the detective darling will have the same bitter reaction to Castle’s own revelation. (Which is, of course, the fact that he’s been investigating her mother’s murder behind her back all season — something equally, if not more, upsetting, we’d say!)

We get that Castle’s heart (and ego) are broken, but what the adorkable crime writer’s been doing to Beckett behind her back may be even more detrimental to their relationship.

So, Castle junkies, how do you think Detective Kate Beckett will respond when she learns Castle’s been digging behind her back?

Will she go all Ice Queen on him like he has her, or do you think she’ll pull on her big girl panties and actually talk it through? Or do you think she’ll be too overwhelmed with all the other, high-priority, potentially life-threatening stuff going on the episode to really focus on the fact that he has essentially been lying to her for months?

Castle creator Andrew Marlowe says the season finale will focus on Beckett's mother’s murder, Beckett’s shooting, and Castle’s secret — which obviously leads us to believe they’re all somehow related, and not in a good way.


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