A gripping mystery-thriller by Chetan Bhagat. The story follows Keshav and Saurabh, an unlikely investigative duo, as they are approached by a wealthy family whose young daughter has been missing for 400 days. As they dig deeper into the case, they uncover hidden secrets, family tensions, deception, and unexpected twists. Blending suspense, crime, mystery, and emotional drama, the novel keeps readers engaged while exploring the complexities of family relationships and human nature.