Whilst owning a large library of books covering the Cold War period, I cannot recall another volume that covers the espionage role of submarines in such interesting, fascinating detail.This book uncovers new tales and fleshes out details of other previously encountered stories. The research behind the stories is impressive, as is the level of access the authors seem to have obtained.
This book conveys an objective view of both countries activities during the period and doesn't suffer from the propaganda trap many other works suffer. However, it focuses more on the American escapades, probably due to Soviet secrecy hangovers.
The only slight disappointment is that this book covers a relatively small number of tales. However, this is balanced by the superb detail of each piece.
I can certainly recommend this book.