Pivotal for Beckett's character development as well as finally allowing Caskett to happen. Contains one of the standout scenes of the entire run of the show to date - the fight at Beckett's apartment and specifically Castle's monologue.
This episode demonstrates the mystery genre perfectly, it shows how much Castle has developed as a character, and to top itoff, the culprit truely was the person you least expected.
Along with Knockout, key episode for the major story arc of the show. The first time Beckett acnoledges Castle as her parter instead of just a tag-along. Also Castle punching out a trained assassin is all kinds of badass.
Had a massive impact on storylines and characters. Shocking revelations with a purpouse isntead of the all too often seen nowadays shock for shock's sake.
Perfect episode to highlight Alexis' character as well as her relationship with her father, leading to a very satisfying story and even more satisfying conclusion.