Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.8
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
3074
Points per Word
0.000163
Page Count
32
Points per Page
0.015625
Series
Mystery Files (Crabtree)
Description
This book discusses examples of codes and ciphers used by ancient and modern armies, organizations with secret rituals, mysterious designs etched into the ground, and stone buildings and statues whose purpose are no longer known.