Sixth-grader Rusty, determined to help an injured dog that is chained outdoors in frigid weather, calls animal control then takes matters into his own hands, aided by his best friend and a ghost collie that leads Rusty to an even deeper secret. Includes instructions for knitting cat blankets. Interest Level: 5-8 Reading Level: 4.6 ATOS Book Level: 4.6 AR Interest Level: MG AR Points: 6 AR Quiz: 139114EN Reading Counts Level: 4.5 Reading Counts Points: 11 Lexile Measure: 730 Iowa Children's Choice Award 2013 - 14.