Touching Spirit Bear
What did Cole did to Peter?
Cole broke into a store illegally, but when he bragged about it to one of his classmates, Peter Driscal, Peter turned him in. In revenge, Cole beat Peter up very badly, causing Peter head trauma and a permanent speech problem.
http://www.gradesaver.com/touching-spirit-bear/study-guide/summary-chapters-1-2-3-and-4