(to Olivia) You're talking about a man who infects people with g...
Peter: (to Olivia) You're talking about a man who infects people with giant viruses. If you hadn't escaped, who knows what they would have done to you. Listen to me, you just told him that you killed his wife. He said that to you to try to get a reaction out of you. To get to you. Let it go. You got his confession. Go home.
Walter: I was worried too. When you were taken.
Olivia: Thank you, Walter.
Walter: (looking at Peter) Not as much as him, of course.