If you are running un*x (mac or linux), type this in a terminal shell:curl -O "http://www.nbc.com/Heroes/novels/downloads/Heroes_novel_[000-043].pdf"
Wait a while (30 - 60 mins depending on their servers), and voila! All the comic PDFs downloaded for your perusal.
Note that the "043" will change as they release more comics. Replace with the current max number as needed. And that's a capital O, not a zero.