Can't sleep, so I'll update instead. Wanted to say thanks to all of you who have reviewed and subscribed, you rock. Strangely, I have already written what I think will be the last chapter for this story...now I have to write all the ones in between. Here is one of them. There will be more.

I don't own Insurgent and I definitely don't own Four. Which is a shame, because he is such a badass.

Cara straightens up and turns to Christina. "You need to get out of here," she says, her eyes wild.

"Why? What's happening?" I snap, gun still raised.

"You're under attack!" she yells.

I don't stop to question her. I grab her arm and turn to Christina, who is standing there frozen, mouth open.

"Christina, where's the Candor control room? The security cameras?" She just stares at me, eyes wide. I put my face close to hers and yell. "Are you deaf, Candor? The cameras!"

She comes back to life, a light switching on. Her eyes grow hard.

"Right down the hall."

We run, dragging Cara with us. She gasps out that a group of Erudite and Dauntless traitors have just broken through the main entrance to Candor headquarters. She left the Erudite and ran up the stairway to warn people.

We burst into the control room. It's deserted so much for security. On the monitors, I can see the front entrance. There are bodies everywhere, a sea of Dauntless black. I can't identify any of them. Then I see him - Eric, stepping over people on his way in the shattered doors, and my blood starts to boil.

I take a deep breath. Rage will not help. I turn to Cara, and try to contain my fury.

"What are they trying to do? Kill off two more factions? There won't be anyone left!"

She shakes her head. "They're not dead. They're asleep. They've shot them with transmitters."

I grow still with dread. "A simulation. Which means…"

"They're hunting the Divergent," Cara says flatly.

I have to find Tris. Immediately.

I pick up my gun and check the clip. "Let's go," I bark.

"Wait!" Cara grabs my arm. "They've sealed off all the exits. They'll be going through each floor systematically. But they missed one of the fire escapes. You can sneak up on them from the outside."

I grab her wrist and remove her hand. "How do I know you're not leading us into a trap?"

She frowns, looking down. "I was in the Abnegation sector, the day of the attack. I saw a Dauntless soldier shoot a council member's child in the head. He was under the simulation." She raises her head and looks me in the eye. "I helped design that serum. I always thought of the simulations as educational tools, a way to boost our intelligence, be peaceful, be honest, conquer our fears…not as a method of mass murder." She sets her jaw. "Jeanine has no morals. She has to be stopped. All of this has to stop."

Christina sets her hand on Cara's shoulder. "Then let's go stop it."

We burst into the Gathering Place and tell the Dauntless what's happening. There is no argument, just action. Everyone jumps up and grabs their weapons. Harrison forms a team and they start evacuating rooms, grouping Dauntless and Candor separately as we move towards the fire escape, a rusty ladder that exits from a large window on the side of the main courtroom.

Christina turns to Cara. "How did you even know this was here?" she says.

"Will and I used to memorize blueprints for fun when we were kids," Cara says quietly. Pain crosses Christina's face. Harrison comes up behind me.

"Christina, you know the complex, you lead us down," he says. "When we get outside, we'll form groups and storm the lobby, then go up the stairways. Each team can take a different floor."

She nods grimly. "Let's take those traitors out."

The group roars and pumps their fists in the air. Everyone starts climbing down the fire escape, single file. I stand in line, bouncing on the balls of my feet. It's too slow. I have no idea where Tris is, and there's no guarantee I'll see her when we get down to the first floor. Eric may already have her. The thought makes my stomach clench in fear.

Four, you idiot. There's a better way to find her. I push through the crowd and run back to the control room. I sit down at the terminal, and start switching through the cameras. All I see are bodies, until I check a hall camera on the second floor. Five Dauntless traitors stand by the elevator, with two Candor under guard. They're awake. They're Divergent. I switch to another angle. No Tris. Just a female Dauntless traitor in an overlarge jacket, crouched down by a body. Hold on. I squint at the camera. That's no traitor. What the hell is she doing? Tris moves, turning slowly, and the body, a young Candor girl, rises and runs towards the exit. I close my eyes. She is on a rescue mission. A selfless, reckless, suicidal rescue mission - and I'm sixteen floors away from her. I open my eyes. And I see Eric standing right behind her.

I sprint back to the fire escape, cursing, pushing people out of the way. I step out on the platform and the wind whips my shirt. I am eighteen floors up, but there is no fear, just adrenaline. I practically slide down the rails as my feet fly down the ladder. I don't even notice when I hit the sidewalk.

I run, catching up with the lead group as they charge into the lobby. The Dauntless traitors are standing by the elevators, armed with some sort of dart gun, and we catch them completely unprepared. My vision tunnels, and all I see is the stairway and the soldiers blocking my way. I shoot two of them in the head, picking up one of their guns as I run. Five loyal Dauntless follow me up to the second floor, as others stream by into the other stairwells.

I pause on the landing and crack the door, motioning to the others to be quiet. I see Tris kneeling on the ground next to a young Candor boy, Uriah a few steps away, being held by two Dauntless traitors. Tris's face is bruised and bleeding, and one of the traitors has a gun pressed to her skull. If I shoot him, she could die. I try to think. Eric is pacing in front of the boy, and then he stops. If I take him out, it will distract his soldiers, and I can find a way to get to her. I raise my gun and narrow my eyes to aim. But before I can pull the trigger, Eric shoots the boy in the head. I grit my teeth, cursing myself for not acting sooner. Forget strategy - I have to do something, now. Eric moves on to Tris. She closes her eyes. I'm out of time.

As I kick open the door, Tris lunges upwards, the knife in her hand catching the light just as she buries the weapon in Eric's chest. My mouth drops open, and I freeze. Tris just stabbed Eric. Time seems to stop as he crumples to the ground. And then, it's total chaos. Uriah leaps up and punches one of his captors in the face, grabbing his gun. Tris wrenches the knife from Eric's chest with a muffled scream. My team bursts through the doorway, and bullets start flying. I see the soldier behind Tris raise his weapon, and I move, slamming my body into him as my team charges into the hall. I jump up, grab Tris with one arm and push her against the wall.

The traitors start running for the stairs, but I don't want them to escape. I want them to die. "Tell me if anyone's behind me!" I shout, shielding Tris as I fire again and again. I empty one gun and switch to the other. She looks over my shoulder, but her fist curls into my shirt and she groans.

I run out of ammo, but I can tell it's over. I throw my gun to the ground, my hand trembling. Tris has her face buried in my shoulder. I look around Eric is moaning on the floor, the Candor boy's body beside him. Four Dauntless traitors are dead. We're surrounded by unconscious Candor, still under the simulation - sleeping drones. I catch the eye of a trembling Candor woman, one of the Divergent. Welcome to our world, lady.

I look down at Tris, and I can barely breathe. I almost lost her again. I feel like I am losing her still, and I don't know how to stop her from slipping away. Then I hear Eric moan, and for a moment, I stop caring. She is brutal, brave, Dauntless - and I am proud. She stabbed him, something I've wanted to do since the day he made me throw knives at her head.

I put a hand on her chin and tip her head up, touching her cheek. Her blue eyes are full of unshed tears, but her gaze is fierce. I trail my hand down her neck, over her shoulder, and down her arm until I reach her hand. I curl my hand around the hilt of the knife that she still clutches.

"Tris, you can put the knife down now."

I pull on it, and we both sink to our knees as she places it on the floor. I put my lips to her forehead as she stares at the blood on her hands.