Rick tries to talk down a tense situation on Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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Rick looks distressed when he tries to negotiate with an accused murderer on Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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Things get serious when Rick tries to negotiate with an accused murderer on Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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Rick ends up as the negotiator during a hostage situation on Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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Agents McCord and Beckett arrive at the 12th to everyone's surprise on Castle. "Need to Know" is the third episode of the show's sixth season.
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Castle and Beckett are back together at the 12th but is it only temporary on Castle? "Need to Know" is the third episode of the show's sixth season.
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The boys, including new Detective Sullivan, look a little wary when Agent Beckett shows up at the 12th on Castle. "Need to Know" is the third episode of the show's sixth season.
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Kate has to watch as Detectives Ryan and Esposito perform an interrogation on Castle. "Need to Know" is the third episode of the show's sixth season.
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Castle Quotes

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

Castle

The moment we met my life became extraordinary. You taught me more about myself than I knew there was to learn. You are the joy in my heart. You are the last person I want to see every night before I close my eyes. I love you Katherine Beckett and the mystery of you is the one I want to spend the rest of my life exploring. I promise to love you, to be your friend and your partner in crime and life till death do us part and for the time of our lives.

Rick Castle