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"Castle Rock", a psychological-horror anthology series available on Hulu, features the character Ruth Deaver, portrayed by renowned actress Sissy Spacek. Each season of "Castle Rock" explores different characters and stories, weaving them into the rich tapestry of the fictional Maine town of the same name. Spacek brings depth and complexity to the role of Deaver, captivating viewers with her performance in this unsettling and captivating series.