Ratched is an American psychological thriller streaming television series created by Evan Romansky, developed by Ryan Murphy and starring Sarah Paulson in the title role. The series, a prequel to Miloš Forman's 1975 film One Flew Over the Cuckoo's Nest, depicts the life of Mildred Ratched prior to the events portrayed in the film, albeit in a different state. Ratched received a two-season series order; the first season premiered on Netflix on September 18, 2020.