Go for Preston and Child - any of their books, see
http://www.prestonchild.com/ - I have them as paperbooks but saw that Fictionwise sells them at
http://www.fictionwise.com/servlet/m...stoneBooks.htm
Fictionwise also have books by my favourite Raymond Chandler.
Or for scifi, authors like Robert Silverberg (Across a billion years, Times of Changes, Downward to Earth) and Greg Bear (Moving Mars, the mtriology Eon + Eternity + Legacy, Darwins Children) are always good.
Jorgen