“Do you know what you've done?" Robin seldom scolded Isaac.

This was one of those rare occasions.

Isaac's lips formed a cold smile, revealing the discontent he was feeling from within. "Grandpa, you knew Travis kidnapped my child and my woman, but you did nothing to stop him or tell me about it. Why is that? Are you on Travis‘ side? Are you his accomplice?"

Robin's eyes widened.

“How did you know that I knew?"