Most of the fiction I read relates to investing and the stock market. I just finished reading The Protégé: A Novel (The Protege). This novel is an incredible, fast-paced thriller / mystery book which gives a glimpse into the private equity business. This book has so many plots, sub-plots, and micro plots, that it was hard to keep up, which was fine with me because it kept my interest going.
The book includes an executive accidentaly killing a woman at a sexclub, nanotechnology, Las Vegas, huge equity buyouts, the Mafia, a new upwardly moble female member of the firm, and much, much more.
If you want a great read, check out The Protégé .