Mary: We're as close as we're ever going to get. Tonight, whether or not we find the Hydra, you're going home.
Sarah: What do you mean? No, I can't. I promised Chuck that I wouldn't come home without you.
Mary: Yes. I made a lot of promises, too. I don't want you to become me. And I will not allow my son to become his father. So, tonight, it ends.