Grey is tortured by something he did a year earlier, knowing that Caden will never forgive him.
From Interitas Volume 3: Unequaled
“I can’t tell her the truth,” Grey said. “She’d never forgive me.”
“Ya had a good reason for doin’ what ya did,” Alice said. “That girl had to be taken care of. What was her name?”
Grey hesitated. He didn’t like saying the name out loud. He felt dirty when he did.
“Shane,” he whispered.