Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.7
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5502
Points per Word
0.000182
Page Count
64
Points per Page
0.015625
Series
Eyewitness Books
Description
Discover the secret world of espionage, from the early spymasters to the electronic surveillance of today.