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Firefly Reunion on Castle – Adam Baldwin to Guest Star

By on March 2, 2012
Nathan Fillion and Adam Baldwin will appear on Castle this spring

Nathan Fillion and Adam Baldwin will appear on Castle this spring

Captain Mal Reynolds will be reunited with his mercenary buddy Jayne Cobb from the sci-fi fan favorite Firefly when Adam Baldwin appears on an upcoming episode of Castle this spring, according to a report in TVGuide. Nathan Fillion has made onscreen references to his cult favorite role in Firefly (and its spin-off feature film Serenity) on previous episodes of Castle (such as appearing in Captain Mal’s costume for Halloween as a “space cowboy,” and surprising Detective Beckett with his ability to speak Mandarin Chinese), but this will be the first time that another Firefly/Serenity actor has appeared on the show.

Baldwin will be playing Detective Ethan Slaughter, a tough gang unit cop who introduces Castle to a darker and grittier side of police work. Nathan Fillion is reportedly thrilled to be acting once more with Adam Baldwin, who spent the last five years playing John Casey on Chuck.