The Girl With The Dragon Tattoo by Stieg Larsson

Harriet Vanger, a scion of one of Sweden's wealthiest families disappeared over forty years ago. All these years later, her aged uncle continues to seek the truth. He hires Mikael Blomkvist, a crusading journalist recently trapped by a libel conviction, to investigate. He is aided by the pierced and tattooed punk prodigy Lisbeth Salander. Together they tap into a vein of unfathomable iniquity and astonishing corruption.