Ratched is an American psychological thriller streaming television series about the character of the same name from Ken Kesey's 1962 novel One Flew Over the Cuckoo's Nest. Created by Evan Romansky and developed by Ryan Murphy, the series stars Sarah Paulson in the title role and serves as a prequel to the novel. Ratched received a two-season series order; the first season premiered on Netflix on September 18, 2020.[1][2]