Don't Worry Darling" is not based on a book, but rather a spec script originally written by Shane and Carey Van Dyke. The script was then rewritten for the official screenplay by Katie Silberman, who also co-wrote Wilde's "Booksmart." Though not directly based on any pre-existing stories, reviews for "Don't Worry Darling" have compared it to hit psychological dramas and thrillers like "The Stepford Wives," "The Truman Show," and "Black Mirror.