There's no stopping her. John knows better than to try. What he does instead is take one of his cards from his pocket and holds it toward Root. She might want to call him, he figures, once she does what she needs to do. She obviously knows where he lives now, too, but he likes to think she won't shoot the lock off their apartment a second time.

"You don't have to believe us," he says. "But take my card. When you decide you want your envelope, it's at the train station. The information booth. And don't shoot anyone, Root. I'm still working under the John Riley identity here, so don't make me have to arrest you."

It's mostly an empty threat. As empty as the threat with her shotgun, although he suspects she's preparing more for whatever she confronts when she leaves. And that's what he's afraid of. Most of this city is like any other. Innocent and unaware. He doesn't want anyone to get hurt.