The Happiest Girl in the World is a gripping psychological thriller by Jessica Knoll. This bestselling book tells the story of Anna, a seemingly happy woman with a dark secret from her past. As her present unravels, she must confront the trauma that has haunted her for years. This is a must-read for fans of psychological thrillers with unpredictable twists and turns that will keep you guessing until the very end. The book will be turned into a major motion picture by Reese Witherspoon.