ABC's hit TV series, Castle, continues to garner interest for its next season 6 installment, which will include a reunion between Castle (Nathan Fillion) and his father (James Brolin).

Potential Pi Exit, Castle's Dad's Return & 3XK Mystery Discussed

Brolin had spoken to Antenna Free TV and had given the confirmation that he's indeed back on board to reprise his role in the second part of the sixth installment.

Creator Andrew Marlowe told TVLine on Dec. 3 that the crime novelist and his dad will be "flung together once again" and "Castle begins to wonder whether he can trust this mysterious stranger."

To top off the respective chatter, the actor himself acknowledged that he wouldn't be coming back to the crime series unless his character was abnormally off the grid in some way.

"[T]here's no reason for me to do another episodic show... unless I can show you the complete other side of this character, the one you might be afraid of. Rather than you finding out he's a good guy, you find out he's good in front," Brolin added.

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ABC's Castle will be airing its next episode on Monday, Jan. 6 at 10 p.m. EDT. Be sure to keep checking back for more of the latest details on the popular TV series. Castle and his father's reunion is set to take place on Jan. 20.

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Castle, ABC, Television