This collection investigates the limits of linguistic dexterity and lateral thinking through the medium of high-level cryptic crosswords. The Times (London) editorial team curates these puzzles to challenge the reader's vocabulary, cultural knowledge, and ability to decode complex wordplay. By presenting a series of increasingly difficult grids, the book serves as a rigorous training ground for enthusiasts seeking to master the specific conventions of British cryptic crosswords.

The subject matter points to a specialized, high-density collection intended for experienced crossword solvers who prioritize technical challenge over casual play. The framing suggests a rigorous, traditional approach to puzzle design that demands significant attention to detail and a broad command of the English language.