Struggling writer Lowen Ashleigh (Dakota Johnson) is hired by Jeremy Crawford (Josh Hartnett) to finish the bestselling book series of his wife, Verity (Anne Hathaway), after an accident leaves her unable to write. While sorting through Verity's office, Lowen discovers an unfinished autobiography filled with chilling confessions — and begins to wonder what really happened in that house. Based on Colleen Hoover's thriller.