As first reported by our sister site Deadline, Fillion’s absence was likely intended as a “nudge” to his ABC Studios bosses with whom he is in a contract dispute, as he lobbies for a four-day work week.
Fillion was conspicuously “Twitter silent” on the Friday in question, having posted 11 times the day prior (including the photo below, with Season 6 guest star Lisa Edelstein) and nine times the day after. Edelstein herself went on to post the second photo below, “solving crimes” with female lead Stana Katic.
Production on the ABC drama resumed this week, with Fillion on set. As announced earlier today, Castle‘s new season will premiere Monday, Sept. 23