Answer:
The story I have chosen is called "Son of Stone" written by author Stuart woods. The most exciting part of this book would be near the end when the protagonist comes face to face with the antagonist for a final showdown to the death. This part is the most exciting part because the fight was for long time anticipated because the antagonist murdered the protagonists wife and nearly murdered the protagonists secretary and son so the final battle was thrilling to say the least.
Hope this helps.