Avery, Scott, and Stiles were at Stiles's with Noah after telling him Matt was the killer after Scott and Stiles filled Avery in.

"So, this kid's a real killer" Noah asked. "Yeah" Stiles said. "No" Noah said. "Yes" Stiles said.

"No" Noah said. "Dad come on everybody knows that the police look for ways to connect victims in a murder okay so all he had to do was like look through the transcripts and figure out which class they all have in common" Stiles said.

"Yeah except for the fact that the rave promoter Kara wasn't in Harris's class" Noah said.

"Alright okay you're right sorry then I guess they dropped the charges against him" Stiles said. "No, you know what they're not dropping the charges but that doesn't prove anything" Noah said.

"Scott, Avery do you believe this" Noah asked. "It's really hard to explain how we know this but you just gotta trust us we know it's Matt" Scott said. "Please trust us" Avery said.

"Look he knew that if a cop found tire tracks at one of the murders and that if enough of the victims were in Harris's class that they'd arrest him" Stiles said.

"Alright fine I'll allow the remote possibility but give me a motive" Noah said.

"I mean why would this kid want most of the 2006 swim team and it's coach dead" Noah asked.

"Isn't it obvious" Stiles asked. "Our swim team sucks they haven't won in like six years" Stiles said. "That doesn't make any sense" Avery said.

"Okay we don't have a motive, yet I mean come on does Harris" Stiles said. "What do you want me to do" Noah asked.

"We need to look at the evidence" Scott said. "Yeah, that would be in the station where I no longer work" Noah said. "Trust me they'll let you in" Stiles said.

"Trust you" Noah asked. "Trust, trust Scott and Avery" Stiles said. "Them I trust" Noah said.

>>>

Avery, Scott, Stiles, and Noah were in the sheriff station hoping to find something in the tapes from the hospital.

"I don't know guys I mean look at this there was a 6-car pile-up that night the hospital was jammed" Noah said. "Just keep going look he had to pass one of the cameras on that floor to get to Jessica okay he's got to be on the footage somewhere" Stiles said.

"Hold on stop did you see that scroll back" Scott said and he did. "That's him that's Matt" Stiles said.

"All I see is the back of someone's head" Noah said.

"Matt's head yeah I sit behind him in history he's got a very distinct cranium it's weird" Stiles said.

"Are you crazy" Noah asked. "Alright fine then look at his jacket huh how many people do you know who wear black leather of jackets" Stiles asked.

"Millions literally" Noah said. "Are you forgetting about my boyfriend" Avery asked. "He wears a leather jacket" Avery said.

"Can we scroll forward there's got to be a shot of him coming at one of the cameras" Scott asked.

"Right there stop, stop, see there he is again" Stiles said. "You mean there's the back of his head again" Noah said.

"Okay but look he's talking to someone" Stiles said. "Wait a minute that looks like" Avery said, and Scott noticed what she saw. "He's talking to our mom" Scott said.

>>>

"Scott, you know how many people I deal with in a day" Melissa asked.

"This one's 16 he's got dark hair he looks like a normal teenager" Scott said. "He looks evil" Stiles said.

"Scott I already talked to the police about this" Melissa said. "Okay mom I'm going to take a picture and send it to you" Scott said doing so sending it to her.

"Did you get it" Scott asked. "Yeah" Melissa said. "Did you recognize him do you remember him" Scott asked.

"Yeah, I did I mean I remember I stopped him because he was tracking mud in the hall" Melissa said. "Scott what's going on" Melissa asked.

"It's nothing mom I'll explain later I got to go" Scott said hanging up.

"Alright we've got shoe prints alongside the tire tracks at the trailer site" Noah said.

"And if they match that puts him at the scene of three murders the trailer the hospital and the rave" Stiles said.

"Actually, four a credit card receipt for an oil change was signed by Matt at the garage where the mechanic was killed" Noah said. "When" Stiles asked once Noah got up.

"A couple hours before you got there" Noah said. "Alright dad if one's a, incident two's a confidence three's a pattern what's four" Stiles asked. "Four's enough for a warrant" Noah said.

"Scott call your mom back see how quick she can get here if I can get an official ID, I can get a search warrant Stiles go to the front desk feel them to let Scott's mom in when she gets here" Noah said.

"On it" Stiles said leaving while Scott called Melissa.

>>>

"She's on her way here" Scott said. "Sheriff" Avery said seeing Stiles come in with Matt.

"Matt it's Matt right Matt whatever's going on i guarantee that there's a solution that doesn't involve a gun" Noah said.

"You know it's funny you say that because I don't think you're aware of just how right you are" Matt said. "I know you don't want to hurt people" Noah said.

"Actually, I want to hurt a lot of people you four weren't on my list, but I could be persuaded, and one way is to try dialing somebody on your cell phone like McCall is doing, that, that definitely could get someone hurt" Matt said.

"Everyone now" Matt said motioning for everyone to put their phones down. "Come on" Noah said and everyone put their phones down.

They all were now in the jail cell and Stiles had handcuffed his dad.

"Tighter" Matt said. "Do what he says Stiles" Noah said and Stiles tightened it. Matt had led the three out of there.

Stiles, Scott, and Avery saw the dead bodies. "Are you going to kill everyone here" Avery asked.

"No that's what Jackson's for I just think about killing them and he does it" Matt said and pushed them to walk.

>>>

Scott and Avery finished shredding everything and Stiles finished deleting everything.

"Deleted and we're done alright Matt since all the people you brutally murdered deserved it because they killed you first whatever that means I think we're good here right I'll just get my dad and we'll go you know you'll continue the whole vengeance thing enjoy the Kanima" Stiles said.

"Sounds like your mom's here McCall" Matt said hearing a car.

"Matt don't do this when she comes to the door, I'll just tell her to leave I'll tell her we didn't find anything please Matt" Scott said.

"If you don't move now, I'm going to kill your sister first then Stiles and then your mom" Matt said. They all started walking to the door. "Open it" Matt said.

"Please" Scott said. "Open the door" Matt said and Scott did. Instead of Melissa it was Derek. "Derek" Avery said relieved and then he fell.

Jackson revealed himself. Avery growled and gone to attack Jackson, but he paralyzed her. "I'm so sick of this lizard" Avery said.

>>>

"This is the one controlling him this kid" Derek said. "Well Derek not everyone's lucky enough to be a big bad werewolf" Matt said.

"Jealous much" Avery asked. "Oh yeah that's, that's right I've learned a few things lately werewolves' hunters' Kanimas it's like a freaking Halloween party every full moon except for you Stiles" Matt said.

"What do you turn into" Matt asked. "Abominable snowman but it's more of like a wintertime thing you know seasonal" Stiles said sarcastically.

Matt nodded at Jackson and Jackson paralyzed Stiles who fell on top of Derek.

"Now is not the time for sarcasm" Avery told Stiles. "Get him off of me" Derek said.

"Oh, I don't know Derek, I think you two make a pretty good pair it must kind of suck though to have all that power taken away from you with just a little cut of the back of the neck I bet you're not used to feeling this helpless" Matt said.

"I still got some teeth, why don't you get down a little closer huh we'll see how helpless I am" Derek said and Scott saw car lights.

"Is that her" Matt asked. "Do what I tell you to, and I won't hurt her I won't even let Jackson near her" Matt said.

"Scott don't trust him" Stiles said and Matt moved him off of Derek putting his foot on Stiles pressing hard. "This work better for you" Matt asked.

"Okay just stop, stop" Scott said. "Then do what I tell you to" Matt said.

"Okay alright, stop" Scott said, and Matt stopped. "You take them in there" Matt said gesturing to Stiles, Avery, and Derek. "You with me" Matt said gesturing to Scott.

>>>

"The evidence is gone why don't you just go" Scott said. "You think the evidence mattered that much huh" Matt asked. "No, I want the book" Matt said.

"What, what book" Scott asked. "The bestiary not just a few pages I want the entire thing" Matt said. "I don't have it it's Gerard's" Scott said.

"What do you want it for anyway" Scott asked. "I need answers" Matt said. "Answers to what" Scott asked. "To this" Matt said and showed part of his skin was showing Kanima skin.

>>>

"Hey, you know what's happening to Matt" Stiles asked Derek. "No, the book's not going to help him you can't just break the rules not like this" Derek said.

"What do you mean" Stiles asked Derek. "The universe balances things out always does" Derek said.

"Is it because he's using Jackson to kill people who don't deserve it" Avery asked. "And killing people himself" Derek said.

"So, Matt breaks the rules of the Kanima he becomes the Kanima" Stiles said. "Balance" Derek said. "Will he believe us if we tell him that" Avery asked.

"Not likely" Derek said. "Okay he's going to kill all of us when he gets that book isn't he" Stiles asked.

"Yep" Derek said. "Alright so what do we do, do we just sit here and wait to die" Stiles said.

"Unless I can figure out a way to push the toxin out of my body faster like triggering the healing process" Derek said.

"Oh, oh what are you doing" Stiles asked before he saw what Derek was doing.

"Oh gross" Stiles said. "You have a better idea" Avery asked Stiles who stayed silent. "Didn't think so" Avery said.

>>>

"So is that hypothetical situation we talked about getting any less hypothetical" Stiles asked.

"I think so I can move my toes" Derek said. "Dude I can move my toes" Stiles said.

>>>

The sheriff's station was being shot at and Scott had come back to Derek and Avery. "Take him" Derek said.

Avery saw Scott hesitating, so she spoke up. "Go we'll catch up" Avery said and Scott took Stiles and left.

Derek and Avery managed to get up and made their way out of the room without being seen by the Argents.

>>>

Derek and Avery made it to the jail center in their wolf form and both Melissa and Matt saw.

"Avery" Melissa said shocked. Derek and Avery both growled and they saw the Kanima who screeched, and they growled back at it before going to attack it.

Matt had quickly made his way out of the room. The Kanima had tossed Derek and Avery off of him before they went to attack the Kanima again.

The Kanima had got on the cell gate and kicked them across the room.

Scott finally arrived and threw the Kanima off the gate and transformed to his wolf form. The Kanima left the room and both Derek and Avery got up and went after it.

Lex here don't forget to feel free to comment and ask questions.