Stana Katic Stana Katic

[WARNING: The following story contains spoilers from Monday's episode of Castle. Read at your own risk.]

On Monday's episode of CastleBeckett and Castle took some big steps forward in their wedding planning — but not without a few speed bumps.

While investigating the death of an assistant to iconic fashion editor Matilda King (guest star Frances Fisher), Castle (Nathan Fillion) and Beckett (Stana Katic) each made individual strides in making their impending nuptials a success. While Castle tried to lock down the perfect venue, the Cordova House, Matilda called on former model Beckett to fill in for an emergency fitting of a bridal gown. But even though Beckett made quite the blushing bride-to-be, the moment suddenly took a much more serious turn.

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