Fourteen-year-old orphaned acrobat Dessa, who is searching for her long-lost twin brother, reluctantly agrees to help Topper, the juggler of the circus she works for, and Fisk, the strongman, rob the royal treasury. Three Thieves, Book 1. Interest Level: 5-8 Reading Level: 2.5 ATOS Book Level: 2.5 AR Interest Level: MG AR Points: .5 AR Quiz: 138500EN Reading Counts Level: 3.5 Reading Counts Points: 3 Lexile Measure: 400 Lexile Code: GN (Graphic Novel) Guided Reading Level: P.