This is one fight Oliver wishes he could avoid. Watch an Arrow clip now from "Seeing Red."
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Arrow Season 2 Episode 20 Quotes

Sara: That's not true. I wanted to kill Roy because that's what I do. That's who I am. I spent six years in the darkness and I looked into the eyes of the devil and I gave him my soul.
Oliver: I can help you get it back.
Sara: No. You deserve someone better. You can harness that light that's still inside of you, but I'm not that person and I never will be.

Mom, it doesn't seem fair to me. One mistake and it feels like my entire life is over.

Oliver