Abigail and John, the Templeton twins, and their dog Cassie, foil a pair of inept kidnappers intent on stealing one of their father's newest inventions. Interest Level: 3-6 Reading Level: 5.3 ATOS Book Level: 5.3 AR Interest Level: MG AR Points: 5 AR Quiz: 154819EN Reading Counts Level: 5.5 Reading Counts Points: 8 Lexile Measure: 850.