Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.8
Points
5.0
Fiction/Nonfiction
Fiction
Word Count
33795
Points per Word
0.000148
Page Count
174
Points per Page
0.028736
Series
Nancy Drew Mystery Stories
Description
After a fellow professor disappears while on an expedition in Mexico, a young archaeology professor seeks Nancy's help in unearthing a secret of antiquity that can only be unlocked by three black keys.