Cody Grayson was a classmate of Hanna Frey and had a crush on her.
Almost everybody in Bishop, TX, including Hanna's father believed that Grayson killed Hanna and thus he had been attacked and treated with suspicion by many there. As a result of the attacks, Cody was left blind in one eye. When Reese went to question him about Hanna he attacked Reese but was easily subdued. He told Reese that there was nothing he could do to him that the town hasn't already done and insisted that he didn't kill Hanna. Reese came to believe that Cody was in fact telling the truth.