The book depicts 2 K's battles in 1986-1987. I did not really like Kasparov's bravado and attitude towards Karpov in the text where he describes life not on the chess board, otherwise all the information about organisation of the matches and rising chess interest in UK, for instance. So there is always an accompanying story to the games.
But where the book shines best is games analysis - where else would you find 25 page description of one game? The comments are so intense primarily because games were played long time ago and were annotated by many grandmasters, plus Kasparov explains in his own words why he made this or that move. Moreover, he pays quite a lot of attention to the end games - which is a rarity nowadays.
Again, this book is well presented in hardcover and nice binding. Something that you enjoy holding in your hands, as it is really serious inside (content) it is the same outside.
It would get 5 stars if Kasparov had not claimed that he is "the best player ever" on the cover. He, sure, is one of the best, but come on, Alekhine died undefeated...