What is Desmond Bagley purpose in writing the story ENEMY?

In the novel "Enemy" by Desmond Bagley, the author's purpose is to entertain readers with a gripping and suspenseful adventure story set against the backdrop of international espionage and deception. The novel explores themes of betrayal, loyalty, and the consequences of one's choices. Bagley crafts a thrilling narrative that keeps readers on the edge of their seats, while also providing insights into the complexities of international politics and the nature of enmity.