This chapter gets a little violent just so you know. Enjoy and comment.

Now in front of Shay's apartment door, Cosima tries to keep her rage on hold. She feels disgusted just thinking that she slept with the woman who killed Delphine; it doesn't make any sense, nothing does at this point. Cosima just wants to be able to look somewhat neutral when she faces Shay, at least until she's inside; then she can unleash all her fury. With that thought in mind, she finally knocks.

Only seconds later –which for Cosima felt like an eternity- Shay opens the door.

"Cosima!" She's visibly astonished but excited to see the brunette.

"Hey" Cosima manages a sly –fake- smile to grace her face.

Shay stares at her with a brow lifted, she senses something in Cosima's demeanor, either way she moves to the side to let her in.

"What a surprise, come… come in"

Cosima takes two steady steps inside "I brought Helena with me, I hope you don't mind" the tone in her voice is strange; it doesn't go unnoticed by the blonde.

"Uh…"

Helena crosses the threshold, taking in her surroundings instantly. She then gazes at Shay with a sinister smirk "Hello Shay Davydov, nice to see you again"

It's at that very moment when Shay realizes something is wrong, very wrong.

"What's going on?" She asks switching her eyes from Cosima, to Helena while taking long steps backwards.

"Nothing is going on; we're here to talk" Cosima leaves her bag carefully on the couch "well, unless you're not willing to co-operate. Then maybe something could go on" she adds with evident sarcasm.

Helena watches as Shay's back hits a small table and how she reaches blindly for what looks like a drawer.

On instinct Helena takes a lock from her pocket and throws it at Shay's hand.

The sudden cry the petite blonde lets out indicates she hit the target.

Cosima, taking in the scene commands to her sister "Helena grab her, go!"

Helena pounces on Shay and clutches at her, trapping her arms flat against her own body. "If you scream I'll break neck" She words in Shay's ear for good measure.

Even if she wanted to, Shay couldn't let a single sound escape her throat. She was not only dealing with the shock of what was happening but the hold Helena had on her was really strong, almost taking all the air from her lungs.

Helena turns to Cosima, waiting for her next instructions.

Cosima seems to be considering what to do next, she stays rooted in place for some moments, watching Shay's chest go up and down. She keeps staring at her until an idea pops in her mind.

"Put her in the bathtub"

With no effort, Helena lifts Shay from the floor and carries her a few steps to the bathtub. She deposits her into the tub being careful not to let go of Shay.

Shay finally seems to snap "what are you doing Cosima, what do you want!"

"What I want? Hmm, let me see" Cosima moves to the kitchenette "As I said I'm here to talk" She lets her hand slide along the counter "and I'm pretty sure you must have figured out what it is that I want to talk about" her eyes roam the small space, when suddenly they land on something.

"Cosima I…"

"Quiet!" Cosima yells grabbing on the object she was looking for. "I'm the one doing the talking here I don't wanna hear your voice!" She takes a breath composing herself before continuing "you know? I just remembered something you told me some months ago. It was about your bathtub and blood" Cosima turns and walks toward Shay with deliberate slow steps, sporting a knife in her hand.

The expression Shay is portraying now can be only described as terror "no, Cosima wait, please you can't…"

Cosima's eyes fill with fury at the sound of her words and she sprints toward Shay. Cosima swoops down in front of the tub, clutching Shay's jaw with force.

"I said shut up!"

Even Helena –who's seen worse- was taken aback by her sister's attitude. She looks at Cosima's face and seems confused not being able to find the woman she has gotten to know in the past months. But still she remains quiet just holding the blonde.

Cosima is breathing heavily, her veins popping from her neck "you are a murderer and a traitor. You used me to follow those assholes orders, you're a neolutionists bitch!" She lets go of the jaw "I saw you, I saw you when you…" Cosima chokes "… when you killed her and I swear to whatever entity out there you're paying for that!" She then pulls at one of Shay's arms and holds her by the wrist.

Shay struggles to get her arm free but she finds it impossible. The grip Cosima has on her is unlike anything she's ever known.

"You left her there, alone; slowly drifting away, suffering;" She moves Shay's wrist up "and I'm gonna make sure you feel that same agony and pain" said that, she slits the flesh on the blonde's wrist, making sure the wound is superficial.

Shay lets out a strangled cry at the pain as blood begins dripping from her skin.

"Does it hurt? Oh I haven't even started yet!"

"Seestra" Helena intervenes unable to witness Cosima in this state anymore "I can do it, gimme knife I do it"

"Do you have any idea what you did to me? Huh?" Cosima continues to address Shay like she hadn't heard Helena. "The moment you took her life you took mine along with hers".

"Cosima, please stop…" Shay begs weakly, her body shaking.

"This is what's left of me; this is what you have done!"

"You don't understand…"

"I don't need to understand anything! You are just like them, a crazy bitch playing God with people's lives and I'm done! It has to stop! You…"

"I love you!"

Cosima's face transforms from fury into something else that can't be described with words "what… did you just say" she manages through gritted teeth, her face red.

"Don't do this…" Shay whispers "please don't do this…"

Cosima fixes her eyes on the vein that stands out on Shay's wrist. It is right next to the cut she inflicted. She doesn't pay attention to her hand now covered in blood; she can only see the vein. Cosima clenches her jaw and slowly moves the knife without hesitation to its final destination.