If it is book-length, look at the introduction, conclusion, and one essential chapter.
Finding the Higgs particle would complete an essential chapter in our quest to understand the basic constituents of the universe.
The Great Black Migration is not only an essential chapter in black history but is still a vital part of black economic fortunes today.
The saga, an essential chapter in the British wartime narrative, is not widely known elsewhere, and what Nolan delivers is neither a history lesson nor even much of a war film.
Because Dr. Franklin's reputation as a scholar was so high, this seemed less an act of protest than of historical witness: the man who had documented the history of black America was now a first-hand participant in its next essential chapter.
Variety, though, swims against the tide, describing it as "the longest and least essential chapter in the series".
Human rights are the ultimate moral justification in the international arena against terrorism, and Argentina represents an essential chapter in that history.
In a retrospective of the second season in Entertainment Weekly, the episode was rated an A-, being called "an exhausting, essential chapter, boasting the series' most visually stunning finale".
This story is an essential first chapter, not only to the southern movement that followed, but to the riots that erupted in northern and western cities just as the civil rights movement was achieving major victories.
The carefully researched descriptions of Boston in its post-Colonial days were cut as not moving the story forward, and pages detailing a legal affair I still think a very important case in this country's history — the Frost case — was trimmed to its skimpy essentials in chapter 33.
