Summary from Goodreads:
Mikael Blomkvist, crusading publisher of the magazine Millennium, has decided to run a story that will expose an extensive sex trafficking operation. On the eve of its publication, the two reporters responsible for the article are murdered, and the fingerprints found on the murder weapon belong to his friend, the troubled genius hacker Lisbeth Salander. Blomkvist, convinced of Salander’s innocence, plunges into an investigation. Meanwhile, Salander herself is drawn into a murderous game of cat and mouse, which forces her to face her dark past.
The second in the Millenium series, this book was really all about Lisbeth Salander, which I loved. She is such an interesting character; a study in contradictions. She is tough and independent, yet very naive and innocent-like. She isn’t really innocent of anything, but she still comes across that way.
There were lots of little sideline stories, in addition to the main one or two. They were written well, and were easy to follow. At no time did I get lost or confused.
Even though this is a series, both this book, and the first, were complete stories. The first could have stood alone, and so could this one. They did tie together, but it wasn’t necessary to read either one. In my opinion, this is the way series should be written.