This book virtually doesn't have a storyline. It is rather a collection of loose narratives of spies walking or driving around cities overseas in the Cold War era. There's nothing new or of interest to historians or anyone interested in surveillance techniques. The only "Moscow rule" the authors repeat over and over is "one is an accident, two is coincidence, three is enemy action". They took it from Ian Fleming's "Goldfinger"! C'mon, is "Goldfinger" a textbook in the CIA Academy? I doubt so. A lot of ink is wasted on the author's middle age love affair no one is interested about. Read a James Bond novel instead - at least, there's some action besides the love story.