What Episode Does Carl Lose His Eye Novels & Stories

He looked like a pathetic mess, which was unlike his usual dapper self. I couldn't think of a reason why he'd want to kill me. When Carl saw me, he struggled against his restraints. The rag in his mouth muffled his shouts. "Why aren't you dead? Why did you have to show up in front of Eliza?" It looked like Carl had gone mad. The guards at the door eyed him warily, only relaxing once I assured them everything was fine. Carl's eyes were bloodshot. I took out the rag from his mouth, but he abruptly calmed down and filled me in on what had happened over the last four years.