This book follows Neil McDonald's Giants of Strategy in the Chess Secrets series. Subtitled "Learn from Kasparov, Tal, and Stein," the book focuses on three attacking players with very different styles of attack, focusing on games from the 1970's to develop a broader understanding of the attack.
Two things make this book worthwhile. First, Crouch examines 31 attacking games to develop his idea that there are three different ideas of how to play for the attack, based on the amount of speculation the player prefers. He likens this to playing poker. For example, he demonstrates that Tal was almost eager to sacrifice pieces on pure speculation. He analyzes a win against Spassky where the latter ducks a sacrifice that was, in fact, losing -- hardly a novel win in Tal's career! Tal was always very ready to enter complicated attacks in which neither he nor his opponent could tell whether it was a bluff. By contrast, he shows that early in his career, Kasparov was just as committed to the attack as Tal, but focused instead on sacrificing pawns for clear piece mobility. Rarely did Kasparov invest a piece unless he could essentially calculate his way to a win. And Stein's style was even more conservative -- if this can be said of any attacking player. Stein's method was to develop a superior position and then break it wide open, usually without a sacrifice at all. All three players were known as ferocious attackers, but of three very different kinds, based on their willingness to gamble.
Second, this book complements McDonald's book. McDonald's focus on strategy develops themes that mostly involve play with pawns and rooks. Indeed, play with pawns and rooks seems to exemplify strategic and positional play. By contrast, Crouch's book naturally focuses on active minor piece play complemented by queen activity. Between the two of them, they give the student an excellent overview of the middlegame.
Colin Crouch's last book was on the art of defense, focusing on games by Lasker and Petrosian, and is without doubt the best book ever written on defense. While not up to the previous standard (perhaps because attack has received more attention from other writers), "Great Attackers" is a worthwhile book to study.
For further study and mastery of the attack, the following are also excellent.
1) Mihail Marin's Secrets of Attacking Chess, which focuses on the trade-offs between material and development, and draws out a lot of original ideas.
2) Jacob Aagaard's Attacking Manual, which develops several common attacking themes that together would suffice to strengthen the attacking play of any amateur; this is the most comprehensive single-volume work on the attack since Vukovic.
3) Dunnington's Understanding the Sacrifice, which, in addition to covering various types of sacrifice, offers the best overview yet of the use of color complexes in the attack.