What is the author's style in A Man Called Intrepid: The Secret War by William Stevenson?

A Man Called Intrepid is written from the third person point of view. The author, William Stevenson, functions as the narrator. As such, he is able to provide the much needed background information and other details that make the book so interesting. The author sets the scene by describing the setting, the equipment and other details so the reader has a complete picture of what is happening.