"I'm sorry for who you lost," he says softly. "... But good. Good that you vanquished him. He was ..."

He lets out a shuddering breath, pulls himself together, and meets Steve's eyes.

"I know you've no reason to believe me. But he used one of the Infinity Stones to control my mind. Brought my worst desires to the front of it. That's ... that's why I brought the Chitauri to New York. I ... on my own? I would have never."