TOBIAS POV

I wait on the steps of my old abnegation home until I see a petit, narrow girl, with bright blue eyes, and hair that glints gold in the sunlight. As she walks up the stairs, she grins. "Tris", I say, as she wraps her arms around me. "So..." she says whilst following me into the living room," missed me, huh?" A faint smile plays at her lips." Well, I guess you could say that..." I smirk. "Tobias-" she starts, and reaches out to take my hand in hers.

That's when it happens; I glance over her shoulder to see a dark figure lurking in the shadows behind her, holding a wicked knife pointed at me, just inches from the back of her neck. Tris must see the sudden panic in my eyes as her eyes flicker up to mine, confused. I open my mouth to warn her, but the shadow man chooses that precise moment to try to stab me. At that moment, I think she realises. She glances over her shoulder, and then surprises me by darting in front of me."TRIS!" I want to scream, "TRIS, MOVE!" But I can't. My lips move but fail to produce any sound. Horrified, I watch the knife pierce her neck. I try to reach out as she slumps to the ground, trembling in pain, but my arms and legs feel like wet cement. I am glued to the spot. I flail around, but it's no use. I'm helpless. I want to reach out and hold her; I want to promise her she'll be alright. But I'm forced to watch as she lies there in a pool of her own blood. Every minute; every second, is absolute agony- for me and for her.

I should have protected her, but I failed to. Three years ago, in the bureau, I should have known that she'd take Caleb's place and sacrifice herself for everyone else. My Tris, my selfless, beautiful Tris. Gone. All the times I watched her get shot instead of her family in dauntless simulations. I should have known that the Abnegation in her wouldn't ever let her brother die in front of her own eyes. Not when she could do something about it. All the things she did for me; she loved me and trusted me, but I failed to keep her alive. Tris is gone and it's all my fault. I failed her. I failed. Failed.