This is a rather adorable photo of Beckett and Castle. It's courtesy of the episode "Significant Others."
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Kate and Rick celebrate their first Christmas as a couple on Castle. "Secret Santa" is the ninth episode of the show's fifth season.
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C. Thomas Howell gives it to Beckett in this scene. The former is guest-starring on "Swan Song."
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Castle and Beckett have a few questions. They try to ask them in this scene from the installment "Swan Song."
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Beckett and Espo work together on this Castle investigation. It's a scene from the episode "Swan Song."
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This is a tough way to wake up in the morning. Beckett has some coffee... and a dead victim.
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Hold me back, Beckett! Espo is far from happy in this scene from Castle.
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That is one dead rocker. Beckett and Castle are on the "Swan Song" scene.
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Beckett and Espo survey the scene in this shot from Castle. It's courtesy of the episode "Swan Song."
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C. Thomas Howell guest stars here on an episode of Castle. It's a scene from "Swan Song."
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Castle and Beckett are followed by a documentary film crew while investigating a murder on Castle. "Swan Song" is the seventh episode of the show's fifth season.
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Castle and Beckett are at a sci-convention on "The Final Frontier." It's a dream investigation!
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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.