What’s in ‘Dragon Tattoo’ author’s secret fourth book?

Like a plot twist out of one of Stieg Larsson’s dark and mysterious best-sellers, the existence of a potential fourth novel in his blockbuster Millennium series is reportedly on a laptop computer that only one person has ever seen. That person — Swedish architect Eva Gabrielsson, Larsson’s live-in companion of 30 years — appeared on TODAY on Tuesday. Larsson, the author of the immensely po