Question: is what happened to monday based on a book

Answer: No, What Happened to Monday (known as Seven Sisters in Canada, France, Spain, Italy and Slovakia) is a 2017 dystopian science fiction thriller film, written by Max Botkin and Kerry Williamson, directed by Tommy Wirkola and starring Noomi Rapace, Glenn Close and Willem Dafoe. The film was released theatrically in Europe and Asia and Netflix bought the streaming rights to the film for the United States as well as the U.K. and Latin America. Netflix released the film on August 18, 2017.