The season four finale of Castle focuses on Kate Beckett. Specifically, the search for her mother's killer.
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Castle and Beckett investigate a car on this season four finale photo. The name of the episode is "Always."
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Castle and Beckett are joined here by a priest. It's a scene from the finale of season four.
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No, this is not a scene from The Walking Dead. It's a glimpse at a Castle episode that appears to center on zombies.
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What the heck is going on here?!? Castle and Beckett react to their unusual surroundings on the episode "Undead Again."
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Castle meets The Walking Dead in this scene, as our favorite investigators appear to be surrounded by... zombie?!?
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Just get naked and get all over each other, you two! Come on now! The fans are ready for some Caskett action.
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Beckett senses tension between her and Castle and for good reason: he isn't happy about being lied to.
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Hands up! Actually, hands down. And put some clothes on! This is a scene from the Castle episode "The Limey."
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Tim Guinee guest stars here on the Castle episode "47 Seconds." He has something to say to Beckett!
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Welcome to Castle, Jennifer Beals. This veteran actress is seen here as a CIA agent assisting Beckett and Castle.
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Beckett has a few question to ask in this scene. She is grilling guest star Hilarie Burton.
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Castle Quotes

Sometimes the hardest things in life are the things most worth doing.

Castle

Castle: How do you know when you're in love?
Beckett: All the songs make sense.