Castle Finale Mystery: Fringe Vet to Guest-Star — But as Whom?

Castle Finale

Perhaps the Castle finale takes place in an alt-universe?

Fringe vet Lance Reddick will guest-star in the ABC drama’s hush-hush Season 7 closer, an ABC rep confirms to TVLine. Details on his character — and the episode’s overall storyline — are being kept under wraps.

Castle co-star Penny Johnson Jerald unintentionally broke the Reddick casting news Wednesday when she tweeted a photo of the actor on set.

Previously, showrunner David Amann told TVLine that the finale will “focus on compelling, high-stakes story-telling surrounding Castle and Beckett mythology,” and that it’d offer a “satisfying end to the season‎.” (Reminder: Castle has not yet been renewed for an eighth season.) The episode is titled “Hollander’s Woods,” which is, of course, a reference to the “password” that Not Henry Jenkins used to earn Rick’s trust after his months-long disappearance/amnesia.

As TVLine previously scooped, the Castle finale will also feature a guest turn by CSI vet Wallace Langham.

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