I read the graphic novel a while ago, and the movie version of V For Vendetta
is true to the source material and yet quite different.
The Commander’s review pretty much covers the material, so I won’t be redundant. The most striking difference between the novel and the movie in my mind was the final scene. I don’t recall a scene like that in the novel (the above ground bits, that is). Makes the movie more hopeful than the book, which is not nearly as dark as most Moore stuff. Might explain why he screamed to take his name off it.