Stieg Larsson, author of the monumentally popular Millennium novels--The Girl With the Dragon Tattoo, The Girl Who Played With Fire, and The Girl Who Kicked the Hornets' Nest--died of a heart attack in 2004. But before he died, he left behind an unfinished manuscript for a fourth Millennium novel, which has never seen the light of day.

Will we ever get to see book four in Larsson's series? First things first: Larsson's literary estate is the subject of a bitter legal battle at the moment. On one side are Larsson's father and brother, and on the other side, Eva Gabrielsson, his partner of 32 years. Gabrielsson is currently in possession of the manuscript, but she can't publish it without the consent of Larsson's relatives.

From time to time, details about the draft have leaked out. Last July, John-Henri Holmberg, a friend of Larsson's, revealed to journalists that the unfinished book took place in Canada. "The plot is set 120 kilometres north of Sachs Harbour, at Banks Island in the month of September," Larsson wrote in an e-mail to Holmberg. (He'd apparently been spending some time on Wikipedia. "Did you know that 134 people live in Sachs Harbour, whose only contact with the world is a postal plane twice a week when the weather permits?" the e-mail goes on. "But there are 48,000 musk-ox and 80 different types of wild flowers that bloom during two weeks in early July, as well as an estimated 1,500 polar bears.")

Now, it seems, we know a tiny bit more. Kurdo Baski, described by The Hollywood Reporter as a "confidant" of Larsson's, has said that Camilla Salander--twin sister of the titular "girl with the dragon tattoo" Lisbeth Salander, and a character of whom readers haven't seen much to date--plays a major role in the plot of the fourth book.

Baski says that the fourth book is concerned with the relationship between Salander and the journalist Mikael Blomqvist (though which Salander isn't specified). And Baksi confirmed that the book is set on Banks Island. Which is the world's 24th largest island and Canada's fifth largest island, for anyone keeping score.