I'm not sure, but from the snuffling, gurgling sounds around me, I think everyone in the room may be crying. I know I am, the tears falling onto Tris's face. I wipe them gently off of her.

My voice really is rough and rumbling now. "Come back to me, Tris. Come back to us. Come back, and I swear I will spend my the rest of my life trying to be a better, braver man - for you, and for myself."

Cara slips away, probably back to the computer, while Christina, Uriah, and Leo press closer. We all look up at the screen. Evelyn is talking now, and it's clear she has taken charge. The Factionless are pointing their weapons at the huddled, beaten room of Erudite, Candor, and Traitor Dauntless. The Amity crouch among them, tending to the wounded. A few Abnegation mill around, looking lost, and there are Dauntless straining against the weapons aimed at them.

"The faction system that has long supported itself on the backs of discarded human beings will be disbanded at once," Evelyn commands, her voice surging around the room.

I stop listening and return my attention to Tris, murmuring encouragement, telling her how much I love her and brushing my hand lightly across her hair.

"It's ready to go," Cara says quietly, leaning over next to me. "Tell me when, and the file will play all over the city." She stands up, and I see Leo move behind her, putting his arms around her, burying his head in her hair. She leans back into him, and he kisses her neck gently before they both return their attention to the screen.

"You can do this, Tris," I say, brushing her lips with my fingertips. I start, because I think I saw her eyes move slightly under the lid.

"Tobias," Christina grips my shoulder urgently, nodding at the screen.

It's me. I'm back in the lobby. Here in the real world, my mouth hangs open when I see who is following me across the room. Marcus and Caleb. What does that mean?

Tris watches me walk toward her, focusing on my feet. I'm wearing black sneakers with chrome eyelets. I'm barefoot right now, and I don't own a pair of shoes like that, as far as I know.

Virtual Tobias crouches down, and I exhale noisily as I see his face - my face. My eyes are shining, and the lines at the corners of my mouth and eyes have softened.

"You were right. I do know who you are. I just needed to be reminded," I say, my voice deep and smooth. Back in the lab, Christina leans her head against my shoulder, shaking with relief, or tears, or laughter, I can't tell which.

"Almost time, Cara," I say quietly. "Get ready." Cara disentangles herself from Leo and moves to the computer.

In Tris's simulation, the screens in the Erudite lobby flicker on. I hear Cara's keystrokes across the room.

"What is this?" Evelyn demands on screen, and I'm almost tempted to turn around to make sure she's not actually at the door.

"This," Tris's projection of me says, intimately, never taking his eyes off Tris, "is the information that will change everything."

"You did it?" she says breathlessly.

"You did it," he -I? - responds, pulling her to her feet. "All I did was force Caleb to cooperate." I hear the real Caleb sigh.

Tris throws her arms around me, and we kiss, without reservations, with all the heat and longing of a new love, a lost love, a true love. And the brain scans flame with light, the pleasure and problem solving regions equally bright. The indicators jump frenetically.

I don't need to tell Cara it's time. She clicks a key. On all the computer screens in the room and after a slight delay, also on the screens in the simulation, a woman sitting at a desk appears.