Castle Rock is filling out its cast.

The Hulu anthology series has added The Leftovers and The Defenders actor Scott Glenn as a series regular. He'll play Alan Pangborn, a retired sheriff who presided over some of the darkest years in Castle Rock's checkered history — a Kingian icon at the center of Needful Things and The Dark Half.

Glenn joins the 10-episode project's previously announced cast, which includes Moonlight breakout Andre Holland, Sissy Spacek, Melanie Lynskey, Jane Levy and Bill Skarsgard. A psychological-horror series set in the Stephen King multiverse, Castle Rock combines the mythological scale and intimate character storytelling of King's most loved works, weaving an epic saga of darkness and light, played out on a few square miles of Maine woodland.