Can Rick convince an armed hostage taker to release her hostages on Castle? "Number One Fan" is the fourth episode of the show's sixth season.
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Things get tense for Rick when he's called in to get an accused murderer to release her hostages on Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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Can Rick convince a fan of his to let her hostages go on Castle? "Number One Fan" is the fourth episode of the show's sixth season.
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Rick tries to keep things calm when he gets called into a hostage situation on Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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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

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