Forty years ago, Harriet Vanger disappeared from a family gathering. Her body was never found, yet her uncle is convinced it was murder—and that the killer is a member of his own family. He employs journalist Mikael Blomkvist and the tattooed, truculent computer hacker Lisbeth Salander to investigate. When the pair link Harriet's disappearance to a number of grotesque murders from forty years ago, they begin to unravel a dark and appalling family history. But the Vangers are a secretive clan, and Blomkvist and Salander are about to find out just how far they are prepared to go to protect themselves.