The women of the Jackson family, Indiana and Amanda, have always had each other. Although their bond is very strong, they differ from each other like day and night. Indiana is a free spirit, a beautiful bohemian woman who is involved in holistic therapies. Separated for years from Amanda's father, she refuses to commit to any of the men who besiege her - Alan, the offspring of one of the most prominent and wealthy families in San Francisco, and Ryan, the enigmatic and wounded former marine.

While her mother always seeks the good in people, Amanda is fascinated by the dark nature of man, just like her father, the head of the Homicide Department of the San Francisco Police. Brilliant and introverted, the straight-A student and future MIT student is a born detective, addicted to crime novels and the online mystery game "Ripper," which she plays with her beloved grandfather and friends from all over the world.

With a series of strange murders occurring throughout the city as a starting point, Amanda begins her own investigation and discovers before the police that the deaths may be connected. However, the case becomes even more personal when Indiana suddenly disappears. Could this fact be related to the serial killer? With her mother's life in danger, the young detective will be called upon to solve the most complex mystery she has ever faced before it's too late.