Popsugar Entertainment Castle Rock Castle Rock TV Show Cast Meet the Cast of Castle Rock, Hulu's Creepy New Stephen King Series 25 July 2018 by Ryan Roschke View On One Page Photo 4 of 11 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Sissy Spacek as Ruth Deaver Ruth is Henry's adoptive mother who she suffers from dementia. Previous Next Start Slideshow Castle RockTV