Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.3
Points
7.0
Fiction/Nonfiction
Fiction
Word Count
48819
Points per Word
0.000143
Description
Martha and the Doctor go to Castle Extremis to witness the signing of a peace treaty. However, a mirror that acts as a portal to another world falls into the wrong hands, and the peace treaty is threatened.