Two hours later, Nessa comes running up to me. I would have smiled but the look on her face worries me. She is looking upset.

She comes right up to my side and whispers "Karen and David have been murdered. Your skills will be useful now. I'll put together a kit for you"

"Where are they?" I ask my stomach feeling heavy.

"In the courtyard behind A" She whispers back.

"Okay, I need gloves, a probe and hot water in a concentrated bottle. See if you can get me a magnifier of some kind." I tell her.

"I know" She replies and runs off.

I leave D and run for A. When I arrive in the courtyard I see Carol, Tyreese, Rick and Daryl all standing there looking over two bodies burned beyond recognition. I've never dealt with remains of people I know before. I clear my throat and go into professional mode.

"What do you need from me Rick?" I ask

We already know who they are. "You need to find out who did this!" Tyreese yells at me.

I look at him calmly "Yelling at me will get you absolutely nowhere, do you understand? You are just going to distract me from what I have to do"

Tyreese's eyes are ablaze with anger but he keeps his mouth shut. I can see Daryl standing rigid and ready to pounce if Tyreese even makes one move in my direction. Nessa comes bursting in seconds later and holds out a little box.

"Here" She says breathlessly.

I take it "Thanks." I look at Tyreese "Maybe you should leave for this part"

He shakes his head firmly "No, I wanna know what you discover"

"Okay, your call" I say and kneel between the two bodies.

I briefly hover my hand across both, testing how hot the melted flesh is. "They haven't been dead long." Still warm, is what I was about to say.

I open the box and pull out the latex gloves and blow into them before sliding them on. They are both dead, dead. So whoever killed them knew to stab the head area but we all know that. I use the hot water and the probe to move the flesh away. It's a long process to de-flesh human remains but I only need the skull. The parietal bones, Temporal bones, Sphenoid and Frontal are all intact.

"Nessa, put on gloves and help me turn her" I say quietly. Nessa is an archaeologist she knows how to handle fragile specimens.

She does as I say and we gently turn Karen's body onto its front. I de-flesh the occipital bone and use the magnifying glass Nessa found. Note to self: ask where later. Karen's spinal cord has been severed from her skull. Someone stabbed her in the back of the neck. Clean proficient, fast. I turn to David and Nessa helps me turn him, I do the same thing. He has the same wound.

I hold out my hand to Nessa "Spit"

She spits into my hand and I rub it on her shirt in disgust "I meant your gum!"

"Oh, sorry" she takes out her gum and puts in my hand.

I press it against the wound carefully then pull it away before it sticks. I get a mould of the weapon.

"Nessa find me some denture paste and baby powder. Daryl, give me your lighter." I say.

"Oh! I know who has… had dentures. Back in a moment" Nessa replies and runs off.

"What do you need those for?" Rick asks

"To make a mould of the weapon used to kill them. It was a knife to the back of the head. You get the mould and you can match it to people's weapons and hopefully you'll get the killer" I tell him and lean back on my heels.

Rick eyes widen "You can do that with Denture paste and baby powder?"

I smile "I was very, very good at my job" Daryl smirks at me with pride.

Five minutes later Nessa comes back with the things I need plus a little bowl and a wooden stick for stirring coffees with. I take them, worried about my sisters hoarding, and mix the concoction until it is a pinky paste. I them smear the paste gently over the wound on the back of David's head and hold my hand out to Daryl.

"You're lighter please, Baby" I say

He places the lighter in my hand and I hover the flame over the paste until it hardens. I close the lighter and hand it back before peeling the mould off. I look at it with a satisfied smile "The knife wound is pretty distinctive."

I stand and hand the mould to Rick "How do we match it?"

"Just stab the knife into something with a consistency of play doe. I know there is some lying around I saw kids play with it. You can do a visual comparison" I look at Tyreese apologetically "That's the best I can do with what I have available to me."

"You found them like this?" I ask taking off the latex carefully and tossing them aside

"I came to see Karen... and I saw the blood on the floor. Then I smelled them." Tyreese explains "Somebody dragged them out here and set them on fire. They killed them and set them on fire!" His voice becomes louder and more aggressive.

Suddenly he turns towards Rick aggressively. Rick steps back and Daryl moves behind Tyreese, poised and ready to tackle him if needs be. I hold my hands up slowly

"You're a cop. You find out who did this and you bring 'em to me. You understand?" Tyreese demands angrily "You bring 'em to me!"

"We'll find out who…" Daryl says and puts his hand on Tyreese's shoulder but Tyreese shrugs him off angrily and Daryl steps back

"I need to say it again?" Tyreese asks aggressively.

"No. No. I know what you're feeling. I've been there. You saw me there. It's dangerous." Rick says calmly

"Karen didn't deserve this. No. David didn't deserve it. Nobody does." Tyreese yells

Daryl puts his hand on Tyreese's shoulder again "All right, man, let's…"

Tyreese turns sharply and grabs onto Daryl's shirt and pushes him against the fence. A sudden burst of anger flows through me and I step forward angrily. Daryl puts his hand up to me and I stop.

"Man, I ain't going nowhere till I find out who did this!" Tyreese yells in Daryl's face

"We're on the same side, man." Daryl says calmly

"Hey, look, I know what you're going through. We've all lost someone. We know what you're going through right now, but you've got to calm down." Rick says calmly.

Tyreese is off Daryl and rounding on Rick angrily and pushes him back. I can see the fight for control on Rick's face "You need to step the hell back!" Tyreese yells

"She wouldn't want you being like this." Rick says

Tyreese punches Rick in the face, sending him to the ground. I gasp as Carol shouts "Stop! Stop!"

Tyreese punches Rick again and it's time to intervene. I step between Tyreese and Rick with my hands up as Daryl grips Tyreese tightly from behind.

"Tyreese, you need to calm down!" I yell.

Rick stands. He pushes me out of the way, sending me staggering into Carol who catches me by the arms. Daryl's grip had loosened when I stumbled and Rick punches Tyreese in the face. Daryl is forced to step back as Rick goes psycho on Tyreese's face.

It take me and Daryl to pull Rick off of him. "Let go of me!" Rick screams

"No!" Daryl shouts back.

Daryl and I hold on until Rick has calmed down just a little and he shakes us off.

I drop to my knees next to Tyreese who is crying over Karen now. "Tyreese, what is hitting Rick going to accomplish? You knock him out and who is there to investigate what happened to Karen and David?"

With no response but a considerably calmer Tyreese on the ground I stand and turn to Rick. "Let me see" I say grabbing his hand. I sigh "Go see Hershel, he'll clean you up"

"You won't do it?" He asks quietly

"No, I won't." I reply.

Suddenly Tyreese gets up from behind me and storms off. I watch after him carefully then look back at Rick. "Go" I say to him

He walks off quickly. I turn to Nessa, Carol and Daryl all looking at me expectantly. I sigh and rub my face with my hands "I don't even know anymore, honestly. Next time I say to you: I have officially seen it all, remind me of today"

Daryl steps forward, seeing my walls starting to bend, and takes charge "Angel, let's get you something to eat."

His arm goes around my shoulder and he leads me away from Carol, my sister and the dead bodies.