Gone Girl, written by Gillian Flynn, is a dark and twisted thriller that explores the complexities of a toxic marriage. The story follows Nick Dunne, whose wife Amy goes missing on their fifth wedding anniversary. As the investigation unfolds, secrets and lies are revealed, painting a disturbing picture of their relationship. The narrative alternates between Nick's perspective and Amy's diary entries, keeping readers on their toes and questioning the truth. Gone Girl is a psychological thriller that delves into themes of deception, manipulation, and the dark side of human nature.