I made my mom watch it by herself, though. I wasn't certain that I was going to watch it at all, since, like I said, I don't care about this series a whole lot. But I figured I should, otherwise I'd never watch it, and I felt that I had to. It is supposed to be great, after all.
Luckily, I did watch it by myself. I stayed up until 2 am watching it. I'm glad I watched it alone, too, because it is not comfortable watching rape/sex/abuse scenes with someone else, and I already knew that this was a graphic movie.
As a story, it's definitely interesting. Integrating the 40-year old mystery of a missing girl along with Lisbeth's and Mikael's stories, it worked well. It is a gruesome story, though! There's a lot of explicit rape or mention of rape and murder. It's better if you're somewhat desensitized to these kinds of scenes, otherwise they may haunt you. I'm not sure they needed or be so graphic, but on the other hand, it's important in order to convey how serious and horrendous the situations actually are, and it gives Lisbeth proper motivation to do some of the things that she does as well as make the audience care.
Since I haven't read the books, I don't know how they compare or what was missing, so I just have to take it for what I see. Overall, good cast, good acting, good story, sometimes hard to watch, perhaps overly long at two and a half hours, and well shot.
My grade: B+