"The Good Girl" is a novel by Mary Kubica that follows the story of Mia Dennett, a young woman who leads a seemingly perfect life. One night, she goes missing and is later found after a harrowing experience. The narrative explores themes of identity, family dynamics, and the impact of trauma on a person's life. The book is structured with alternating perspectives, revealing the thoughts and feelings of Mia, her mother, and the man who abducted her. This multi-faceted approach allows readers to understand the complexities of each character's motivations and the consequences of their actions, making it a gripping psychological thriller.