What is the author's style in The Creature from Jekyll Island: A Second Look at the Federal Reserve by G. Edward Griffin?

The author took the point of view as that of a detective solving a mystery. His evidence was circumstantial in that he could see the results of actions but could not identify whether they had been planned or not. His take was that planning had to have been part of the story, and in fact was the whole story. A conspiracy to destroy the United States and all other sovereign countries has been going on since 1910. Of course economists would not agree with him because their very existence depended upon the conspiracy and the average person could not understand the complexity of the conspiracy.