Castle Star Seamus Dever Teases Surprising Twists and Turns in Season 4, Episode 14: "The Blue Butterfly" - Exclusive!

The film noir episode that Castle fans have been waiting for is finally here on February 6, and Wetpaint Entertainment has some exclusive details about "The Blue Butterfly.""I didn't think we'd get to this episode until the eighth season because it's such a departure from what normally happens in the show," says Seamus Dever, who plays detective Kevin Ryan.When Rick Castle discovers a journal of a private investigator back in the '40s, which is connected to the murder...


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