Check eye color, height, hair, distinguishing marks

Core characteristics, speech patterns, behaviors

Family history, education, past events

How characters interact, existing conflicts and alliances

Verify aging is realistic based on time elapsed between books

Time between books, seasonal progression

Real-world events, fictional historical references

Cross-reference birthdates with current timeline

When characters mention past events, details match what actually happened

Layout, appearance, and atmosphere match previous descriptions

Travel time between locations is realistic and consistent

Climate patterns match established world-building

Customs, traditions, and social structures

Limitations, costs, and abilities remain stable across books

No anachronistic technology introduced without explanation

Power structures, leadership, and laws remain consistent

Currency, trade, and wealth levels are logical

Central messages and motifs throughout the series

Recurring imagery and symbolic elements

References to previous book events match what actually happened

Ongoing storylines progress logically