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ABC’s Castle is having a changing of the guard.

Creator Andrew Marlowe is stepping down as showrunner for season 7, while executive producer David Amann will take over the writers’ room. We’re told Marlowe will continue to maintain a presence on the show, and will develop new projects as part of his overall deal with ABC Studios.”Over the past four seasons, David has proven himself to be a tremendous leader and a great steward of our show’s unique voice,” Marlowe said in a statement. “I’m excited to continue our creative collaboration as he assumes his new responsibilities.”

The Monday night procedural drama, starring Nathan Fillion as a mystery author/crime solver, finished this season No. 2 in its time slot, but having posted gains over season 5 among adults 18-49 and total viewers. In fact, the season was the most-watched season ever, with a viewership total that’s significantly boosted by DVR playback. But the show’s most recent finale — which teased Beckett and Castle’s wedding all season only to throw in a last-minute delay — really annoyed fans. (Check out the comments on our react for proof.)