Ok, literally the best book I had ever read is "Neverwhere" by Neil Gaiman. Seriously, if you don't read it your life will forever be incomplete. Also, anything else by him is excellent; Stardust and American Gods especially. READ THEM NOW. His books are scifi/fantasy. If you're into mystery, or legal dramas check out Michael Connely, John Grisham, Kathy Reichs, and Lee Child.