Hostages are taken and an accused murderer insists on speaking to Castle. "Number One Fan" is the fourth episode of the show's sixth season.
<a href="http://www.tvfanatic.com/gallery/the-hostages/"><img alt="The-hostages" src="http://images.tvfanatic.com/iu/t_full/v1381173082/the-hostages.jpg" /></a>
- Photo Credit:
Castle Season 6 Episode 4: "Number One Fan"
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- Castle Photos, Castle Season 6 Episode 4 Photos
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