I've also enjoyed reading the TrulyEvil!Narcissas I've found in a few fics. I don't think I could ever write her that way, but it's quite interesting to read. Yes, book 6 is a mine of information. And not just the Malfoys. Chapter 2 had me squeeing so much... It was straight out of a fan-fic, I swear. There's definately a lot of pandering to those of us who want the little details in this one. :)