AN: Sorry for not updating, feel free to leave me some hate below.

Gemma and Zeke help him get to his feet.

He catches my eye and his face whitens, "My name's Issac."

I'm taken a back, he looks too broken to be able to speak.

"I'm Tris."

He lets out a little sigh, "I know."

"How?" I ask curiously.

"I'm am his guard."

My throat tightens. He watched over Tobias, making it impossible for him to escape. He helped Chloe torture him.

"He talked about me to you?" I ask quietly.

"Non-stop. It's the only thing that kept him sane."

"You could have let him go." I say angrily.

"I couldn't, there was-." I cut him off before he could speak any more.

"You could have tried!" I shout, not caring about being quiet any more.

"You don't understand." Gemma spits.

I want to tell him that it's all his fault, that thinking of him watching Tobias suffer every day and doing nothing, makes me feel sick and maybe even inflict some more pain. But I need him to take me to Tobias. Tobias must've trusted him enough to talk to him about me.

"We've got to get going." Zoe says. I break Isaac gaze and zip up my fake uniform.

"Tris, hide at the back."

I go to the back of the group and she opens the door.

Gemma and Zeke hoist Isaac out of the door and the rest of us follow. Christina stands to the left of me, gun ready to shoot someone.

We walk down corridor after corridor quickly trying to avoid as many people as we can. A guard runs towards us and stops in front of Isaac.

"Why aren't you looking after Tobias?" He yells.

"I got shot."

"I can see that. He looks at Gemma for a long time then stands on his tip toes and stares at me. He starts laughing and clasps his hands together.

"I can't believe this. Gemma and Tris! Chloe's not going to believe this."

"Please don't." Gemma warns.

He laughs again and she points his gun at the heart. He still smiles cockily and he arm moves upwards and his hand slams on a button on the wall. A loud alarm plays from speaker attached about ten meters apart on the ceiling.

"For god sake!" Shauna screams.

Gemma shoots him to the left of his heart and shoves his away.

She could have just let him go, he's done he's worst by signalling the alarm but I guess she's desperate. Isaac is dying in her arms and she can't even help him because he wants to help Tobias first.

There's a group of soldiers advancing towards us from behind, we start running and I swear I can hear Alaska heartbeat, it's so loud that I'm afraid each thump might be her last. I can also hear screams behind me and the echoes of Isaacs moans of pure pain as he is being half-lifted, half-dragged to wherever we are going. I turn round quickly to see that they are all waiting about half the corridor away from us looking down at somewhere in the middle of the groups feet. I follow their stare and see a little plastic box making a small hissing sound like is going to explode any second now. It's going to explode any second now.

"Gas!" I yell.

Christina hands hers to Colin but he's too in shock to use it and he waits too much time being dazed so Christina puts it on herself are drags him away from the gas. It's clear, well almost, it's got a slight blue tinge attached to it. Dale forces onto Alaska's face. Shauna and Zeke, with Gemma's permission to leave without her and Isaac, sprint out the room without bothering to put hers on. I have a really bad migraine. Gemma's got her own smokers one and fumbles in Isaac's pocket and I can see the pain in her face when she can't find one. I have no ideas where Zoe or Tom is so I can't help them. All this happens in the space of a few seconds. My eye twitches. I know what I have to do. I haven't even put on my mask yet and I still hold it above my chest. I reach over to Isaacs panicked face and place the mask over his pale lips, pull his arm over my shoulder and with Gemma's help, get the hell out of there.

"We have. To Go… Chloe's office." Isaac gasps between coughs.

I can see Chloe's face turn whiter than Isaac as another plastic box lands in front of her foot.