When Mikael Blomkvist is convicted of defaming businessman Wennerström, its role in the first row of the Millennium business magazine, which is co-director with Erika Berger, is relegated to the background. Taking advantage of the situation, Henrik Vanger, former director of the Corporation Vanger, one of the leading companies in Sweden, offers a deal: write a book about his empire and his extended family and, in turn, investigate the disappearance in 1966 Vanger's niece, Harriet. During his retirement in Hedestad small town north of Stockholm and main residence of the clan Vanger, Blomkvist meet several members of the family, and past and present will join together to wring even more a mystery that spans 40 years without resolution . Meanwhile in Stockholm, the life of Lisbeth Salander, a young researcher and incomparable hacker, will shift radically when a dark figure put against the ropes and in turn, Blomkvist research need your help. Mikael Blomkvist, a journalist and co-owner of the monthly magazine Millennium. In a mocking way they call it "Kalle Blomkvist, a boy detective who appears in several children's novels by Astrid Lindgren. Lisbeth Salander, a 24-year old hacker, smart but antisocial. Henrik Vanger, former director (retired) Vanger Corporation. Hans-Erik Wennerström, a Swedish industrialist, Blomkvist aim to expose their corrupt doings. Harriet Vanger, Henrik grandniece who disappeared 40 years ago. Vanger Martin, brother of Harriet. Current Director of the Corporation Vanger. Nils Bjurman, crooked lawyer, guardian of Lisbeth Salander. Vanger Cecilia, daughter of Harald Vanger, Henrik's niece. Erika Berger, editor and co-owner of Millennium. Friend and lover of Mikael Blomkvist. Frode Dirch lawyer Vanger Corporation. Home friend, assistant and executor of Henrik Vanger. Dragan Armanskij, director of security company "Milton Security" boss (and protector) of Lisbeth Salander. Miriam Wu (Mimmi), best friend and lover of Lisbeth Salander. Christer Malm, director of photography and co-owner of Millennium. Vanger Anita's sister, Cecilia Vanger, Henrik's niece and friend of Harriet.