The Girl with the Dragon Tattoo by Stieg Larsson

Second Hand 

THE INDUSTRIALIST: Henrik Vanger, head of the dynastic Vanger Corporation, is tormented by the loss of a child decades earlier and conviced that a member of his family has committed murder. THE JOURNALIST: Mikael Blomkvist delves deep into the Vangers' past to uncover the truth behind the unsolved mystery. But someone else wants the past to remain a secret and will go to any lengths to keep it that way. THE GIRL WITH THE DRAGON TATTOO: Lisbeth Salander, the enigmatic, delinquent and dangerous security specialist, assists in the investigation. A genius computer hacker, she tolerates no restrictions placed upon her by individuals, society and the law.