In this 5th outing of the Millenium series, Lisbeth Salander is in jail. When she comes to the aid of a young Bangladeshi prisoner, she raises the ire of Benito, the prison's ruling sociopath. After browbeating the prison's warden, Salander's access to his computer leads to records that might answer questions about her early life. When she enlists Mikael Blomkvist to aid her search, events begin to happen fast. Salander's former guardian is found dead in his bed, her sister Camilla makes her presence known through a motorcycle game, and dreaded past social workers reappear. As the novel races to its climax, the reader is drawn into the worlds of radicalized Muslims living in Sweden, computer hackers, and hidden genetics research previously sanctioned by the Swedish government. This fifth book only highlights that there is more to know about Lisbeth Salander and her hidden worlds.