Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.2
Points
7.0
Fiction/Nonfiction
Fiction
Word Count
47093
Points per Word
0.000149
Page Count
204
Points per Page
0.034314
Series
Invisible Detective
Description
After finding a mysterious stone and an old casebook, fourteen-year-old Arthur finds himself remembering the 1936 adventures of a boy named Art who, under the identity of the Invisible Detective, works with three friends in London to solve the mystery.