Beckett learns a lot about Gates in this Castle sneak peek. The captain offers her charge some solid advice on the episode "Dial M for Mayor."
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Beckett deals with Captain Gates in this clip from Castle. It's courtesy of the episode "Dial M for Mayor."
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Castle and Beckett arrive at the crime scene in this clip from "Dial M for Mayor." They receive unexpected news there.
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The case of the week on this Castle episode leads to the mayor's office. It makes the investigation tricky for the team to navigate.
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Castle Season 4 Episode 12 Quotes

An officer and a gentleman. That could be the name of our crime log.

Castle

She's the best.

Castle (about Beckett)