Book Anatomy · Trail

Trail: The puzzle as plot engine

Thesis. The plot moves one clue at a time. Each solved clue opens the next door and raises the stakes.

1. The Da Vinci Code: A chain of codes, each pointing to a place or the next key.
2. Treasure Island: A map is both the puzzle and the reason for the voyage.
3. The Moonstone: Who took the diamond, and how, drives every narrator.
4. Harry Potter and the Philosopher's Stone: Who wants the hidden object, and why, runs under the school year.

Other trails: The ticking clock · The outsider sleuth · The hidden heir and chosen orphan · Many voices, one case