Atmospheric and troubling, Harlot's Ghost exemplifies Mailer's skills as both a novelist and a chronicler. Although it should not be read as a factual account of the CIA's activities, it evokes the mood and methods of this organisation and the men who created it.
At first it appears to be the autobiography of Harry Hubbard, which is made up of anecdotes of his adventures in the CIA. The very beginning of the book starts with Harry being told by a friend that his mentor Hugh Montague, a.k.a. Harlot, has either been assassinated or committed suicide on his boat. He then is told by his wife, Kittredge, that she has been unfaithful and is in love with another man. Emotionally worn, he goes to Russia. It is there that he rereads the dense manuscript of his life at the CIA, whose working title is "The Game". At that point, the book really begins. We go through his life, including his relationship with his father and with his then-lover, Kittredge, and all the other people with whom he worked. The book appears to be many things: a thriller, a character study, a treatise on CIA life and its hardships...even a romance novel.
The book ends in 1963 with the words "To be continued," a pledge the author never fulfilled.