Millenium Trilogy, starts with Girl with the Dragon Tattoo

Definitely a series worth reading! I saw the film of the first in the series the other night and recommend that people read the series before viewing the film. The film makers do an excellent job of keeping the necessary elements of the plot so that it makes a good film, even though they change details of how the element works, but a lot of the richness of the book is lost. They also throw in repetitions of a scene that properly belongs in the second book.

Cheers, Rowan