"Angels and Demons" by Dan Brown
(great book about someone trying to blow up Vatican(sp) City, and the Illuminati)

"Blue Nowhere" by Jeffery Deaver
(about a man obsessed with online gaming who goes around killing people)

"Memnoch the Devil" by Anne Rice
(believe it or not but this was actually a good book. Only Anne Rice I've ever read but I still liked it. Its a retelling of biblical history from the devil's point of view as he tries to get Lestat to join him)

And if you have ever heard of Vampire Hunter D then I would definitely read that series. (only 2 that I know of are out)

They're probably not really what you were thinking of when you asked for help but I haven't read too many books and those were ones that I liked the most.

Enjoy.