At the Animal Clinic, Derek, Scott, Allison, and Isaac stand in the examination room with an air of uncertainty around them. The uncertainty is due to the idea that Scott has suggested that they get into Stiles' mind to find out the identity of the faceless body that was found among the deceased members of the Primal Pack.

"Do you have any idea how dangerous performing that ritual is?" Derek questions Scott. Scott opens his mouth to answer, but Derek doesn't give him a chance. "Do you know the amount of control and practice is required to avoid harm or death?"

"He's done it before," Isaac says, coming to Scott's defense. "If anyone can get into Stiles' head, it would be Scott."

Derek has an expression of astonishment, he looks to Allison for help, "You are okay with this?"

"I'm not sure how much a choice we have," Allison speaks carefully. "There are six bodies dead in the woods and three bodies dead at the school. That's nine bodies in one day and only one of them has no face."

"And we've already managed to look into Aaron's school records," Isaac informs him. "The address listed is nothing more than a housing development that is still in the process of being built."

Derek sighs, realizing that their choices are slimming down, "What do we have to do?"

"You actually probably won't have to do anything," Malia tells them as she and Lydia enter the clinic.

"Malia apparently took this," Lydia claims, holding up a phone. "Off one of the bodies in the woods and there's something on here that you guys would want to listen to."

She pushes the play button, "Hey. It's me again." A woman's voice flows from the speaker, "I don't know why you can't seem to call me back. Maybe it's because you think you're punishing me, but this is too long. It's too much, and it's not about us. Something's happening in Beacon Hills, to the people here." She sighs, "I just … I need to know everyone there with you is okay. Can you just please call me, please. One call, that's all I'm asking for. And, if you can't call me back, I'm going to get my answer anyway. That means I'm coming up there myself if I don't get a call from you. I'm coming up there so just try, try to remember it's my pack too."

"Which one?" Allison questions, examining the phone.

"The one without the face," Malia clarifies.

"Okay, so the one with no face," Derek comments. "You think that's the woman on the phone?"

"Maybe." Lydia admits, "It's the same thing that happened to Aaron. It took over his body, basically stole his face and his DNA. So that means whoever this woman is, she could be the other half of the Anuk-Ite."

"Which means she's just half of the problem," Isaac points out.

Malia glances between the group confused, "So, let's just go after the one we know. Let's go after Aaron." She looks at them as if it were common sense, "It'd be easier to track him than..."

"Aaron lied on his school records," Allison informs the Werecoyote and Banshee. "The two of you won't be able to track him, but there is possibly another way."

"How are we going to track someone with no scent?" Derek questions her, "No anything." Allison raises an eyebrow at him as if he really needed to ask such a pointless question. He sighs realizing exactly who he is questioning, "You're still injured," Derek reminds her. "Don't you think that maybe you should be resting?"

"I'll rest when we find half of this thing," Allison tells him strongly. "But if you don't trust me enough to handle tracking down someone on my own, you're more than welcomed to join me."

Derek almost has the decency to be embarrassed. Almost.

"Maybe I will," He says with a friendly smile.

"Okay…" Scott says, trying to get the conversation back on track. "I guess the rest of us will try to figure out whose voice is on the phone."

"Actually," Lydia says speaking up. "There's something I need to figure out with Hawlyn. He's supposed to be dead, but somehow, he led me out in the woods to find a part of the Anuk-Ite. I want to see if I can reach out to him again."

"Do you even know where his body is?" Derek questions her.

"The vision I had was of me at the hospital," Lydia states. "If I'm somehow able to reach him, maybe he can tell me more about the half of the Anuk-Ite he led me to."

"If we find either half, maybe we don't have to fight at all."

"Stop the Anuk-Ite..." Scott continues.

"Stop the war," Allison concludes, eyeing Derek.

At Beacon Hills Memorial Hospital, Lydia and Malia are standing over a dead body in the morgue. The same morgue where Lydia had her shared premonition with Stiles.

"This him?" Malia questions with some uncertainty.

"Yeah…"

Malia eyes the body cautiously while Lydia stares at it with no surprise, "Well, it seems Hawlyn, your dead Hellhound, is still dead." She examines a wound that is on his forehead that has a silver coating has flaked off and the surrounding tissue glows yellow. She glances at Lydia expectedly, "What else were we supposed to do?"

"Figure out how a Hellhound led me into the woods to find another faceless body while being technically dead," Lydia states as a matter of fact.

"Have you ever experienced something like that before?"

Lydia shakes her head at the tone, "I don't think I would have been led out there if he was fully dead."

Malia snorts, crossing her arms over her chest, "I don't think we should be hanging out here waiting for him to spring back to life."

"We don't have to wait if we can figure out how he was able to reach me."

Malia gives her a challenging expression, "How do we do that?"

"I'm just gonna have to ask him," Lydia answers as she steadies herself on the autopsy table with her head almost touching the dead hellhound. She closes her eyes and begins focusing while Malia watches anxiously.

Allison has led Derek to the entrance of the tunnels, "The last sighting of the Faceless was in the tunnels. Parrish burned the body, but, you know, none of them have ever been back down there to check."

"Why not?"

"Because they're scared," Allison answers plainly. "You and I are the only ones who weren't down here that night, so we should be fine."

However, the moment Allison opens the door and takes a step in, she feels Derek take a sudden grab at the end of her jacket, "You feel it, right?" He questions, glancing into the darkness with some caution and fear, "It's like it doesn't want us here."

Allison notes in a shaky tone, "That just means we're in the right place." She closes her eyes and takes a calming breath. Exhaling she opens her eyes, reaching for Derek's hand. This seems to break Derek's fear slightly as he looks at her gloved hand enclosed in his as she gives it a squeeze, "You ready?"

It takes Derek a moment to answer, "Yeah."

Together they continue onward.

Isaac and Scott have been cleaning up the damage that Kate had done to the Stilinski home. The blood streak on the floor is now gone and replaced with a new rug. The bullet hole walls were filled in and painted over. The house was almost returning to its normal appearance of not looking like a murder scene.

"I don't know why we can't for once," Isaac complains as he dumps a shattered piece of glass into a trash container. "Just do it the easy way and just call the number."

"Nothing in the past 24 hours has been easy," Scott reminds him. "Between Stiles kidnapping, Kate's shifter status, Gerard and Monroe, the Anuk-Ite..."

"Derek," Isaac inputs, cutting Scott off. He leans against the threshold of the living and dining room arch, folding his arms while giving Scott a contemplative expression. "I thought we agreed he should've known about Allison as soon as we found out about Kate."

Scott sighs, taking a seat on the couch that was going to have to be replaced, "I was going to tell him."

"Oh really?" Isaac questions, stepping away from the arch and taking a seat next to Scott.

"You got me," Scott groans before slumping his head on Isaac's shoulder. "I was going to tell him, but when Stiles made the decision to not have Derek around her, I chickened out."

Isaac places an arm around Scott, "You know that you're going to have to apologize to him." Scott nods, "And maybe next time don't suggest doing a dangerous ritual that involves embedding claws into the mother of his child's neck."

"Are you done?"

"I could go all day," Isaac smirks. "But we need to focus on the voice. We need to call them."

"And say what?" Scott questions him.

"Hello?" Isaac questions at him as if it is an obvious choice.

Scott hands him the phone, "What are you gonna tell her?"

"I'm gonna try to get her to meet us somewhere," Isaac explains as he goes through the phone. "Meet on neutral ground."

However, the phone suddenly rings and Isaac's maturity about their situation does a 180 as he attempts to hand the phone back over to Scott, "Answer it."

Scott backs away, from the ringing device, "You're the one who wanted to make the call, you take it."

The phone stops ringing, and Isaac gives Scott an apprehensive face before he dials back the number, "Beacon Hills High School." A voice answers, surprising them both, "How can I..."

Isaac disconnects the call, "It's someone at the school."

Isaac's statement seems to trigger something in Scott as he suddenly gets up from the couch and heads up to the second floor of the Stilinski home, to Stiles former bedroom turned study, "I can't believe I didn't think of it in the first place."

Isaac follows Scott into curious about what Scott is going on about, "What are you doing?"

"When Stiles was able to retrieve Malia from the Primal Pack, she had mentioned that one of the pack members wanted to break away," Scott says as he starts logging onto Stiles' laptop at her desk. "However, they didn't want to live here at the Preserve."

"So?"

"So," Scott says as he searches for a particular file, "How else do you think Stiles would keep track of someone like us?"

Isaac's eyes widen at the question, "She didn't."

Scott nods his head as a name appears on the screen, "She did."

"Anything yet?" Malia questions as she is now pacing in the morgue with Lydia who remains on the table next to Halwyn's body.

Lydia takes a deep breath, "As opposed to when you asked ten minutes ago?" Shye questions the werecoyote, "No." She takes a few more seconds to focus, but opens her eyes in frustration, "It's not working."

She gets off the table seemingly disappointed, "Maybe you should touch him," Malia offers.

"That's ridiculous." She gives Malia a skeptical look which is returned to her just as easily, "There's no way."

Malia still doesn't say anything, and Lydia attempts to try Micah's suggestion. She touches Halwyn's head, chest, and hand but none of the methods appear to work.

"I could try it," Malia offers as she easily extends her claws out.

"You could damage his brain," Lydia counters. "Maybe even more than that bullet already has."

They look at the wound and see that bullet is lodged in his head.

"How did it work last time?"

Lydia makes a head tilt, "Last time, I was ambushed by some random bullets and unconscious."

"Unconscious," Malia mutters looking around their environment. She spots a hammer and gets an idea, "Okay, we can work with that!"

Scott and Isaac stand a safe distance away from BHHS as they watch a woman arrive at the school. Only they aren't alone as Liam watches with the woman as well with some disgruntlement, "Mrs. Finch?" He questions the two older werewolves, "You're sure?"

"It has to be her on the phone," Scott surmises. "Her arrival to Beacon Hills is the only one that fits the timeline of when we got Malia."

"Okay, well, that still doesn't prove that she's the Anuk-Ite," Isaac argues at him. "Or even that she's one of us."

"Which is where you come in Liam," Scott tells the younger werewolf, "You need to get closer, see if you can get her to expose her supernatural side."

Liam's face drops slightly, "What about the hunters, and the Nazi student brigade?"

"Yeah, Scott what about that?" Isaac questions in a mocking tone.

"I admit, it's not the best plan, but it's the only one I've got," Scott tells them. He looks to Liam, placing his hands on his shoulders. "You don't have to do this if you don't want."

"You mean if I'm scared," Liam corrects him. He stares back at the school, watching his schoolmates enter the building. "I hate biology," He says, before taking off.

As Scott watches the young werewolf with some pride mixed with worry on his face, Isaac leans into Scott's personal space, his face close to Scott's cheek, "Stiles is going to kick your ass when she finds out about this."

"And Allison is going to kick your ass when she finds out the truth about what happened to her crossbow," Scott says easily without making eye contact. In class, Liam is trying to think of a way to expose his teacher when a boy sits next to him, "Liam."

Liam remains cool at the greeting, "Gabe."

"Welcome back," Gabe says just before he promptly ignores Liam.

Mrs. Finch starts drawing a diagram on the chalkboard, "Phones away, everyone, and settle down." She draws two sets of eyes, blue and yellow. "We have a long way to go to get through the day. We'll start first with..." She trails off when she finally turns away from the board and sees…"Liam," She says with some minor surprise. "I didn't think we'd be seeing you again."

"Can't let my GPA go down just 'cause I got beat up in class," He tells her boldly.

There is some shame on her face, "Yes. Well, I..." She clears her throat slightly. In doing so, she notices that Liam's seat partner has his phone out, "Gabe, I said no phones." She doesn't give the boy a chance to put away his phone as she simply just confiscates it.

"Okay, let's get started," She announces to her class. "Okay, so when two people come together, we have a variety of possibilities. And how do we determine the probability of an offspring having a particular trait? We're talking about, like, your eye and hair color, or, uh, if you have an extra digit."

While she continues her lecture, Liam slips earplugs in and sets off one of the sonic devices used to drive werewolves.

Scott, who has been stationed in the hallway, winces at the sound.

"Your hearing," Mrs. Finch continues with a small headshake as she clears her throat.

At the same time, a girl in Liam's class flees the room holding her ears.

When Mrs. Finch turns around, she frowns noticing that she is missing a student, "Where did Rebecca go?"

Liam turns off the device, "No reaction at all."

"A little warning would've been nice," Scott complains, rubbing his ear. He examines the hall carefully, spotting a shadow approaching outside the window, "Liam? Did that kid Gabe get a text out?"

"I don't know," Liam answers, before raising his hand to volunteer to do a problem on the board just as Gabe had done.

Thinking the shadow outside is a hunter, Scott prepares to fight, but relaxes when he sees that is a maintenance worker, "Hey, Liam, you better hurry up." Scott says, trying to calm himself, "I think we're running out of chances."

Liam is doing the problem on the board wrong and Mrs. Finch lets him know, "Liam, that's not even remotely close." She says, looking at his work. "Why don't you have a seat, and let's try this again."

Before Liam moves away from the board, he sprinkles a small amount of purple Wolfsbane powder on the eraser. Mrs. Finch gives him a disappointed look before she approaches the board, picks up the eraser, and removes what Liam wrote. Purple dust flies around her causing her to sneeze, but otherwise, she seems unaffected, "You'd think I'd be used to that after years." She jokes slightly to her class, but she rubs the dust between her fingers, suspicion falls on her face, "That's it for today." She decides suddenly, "Class dismissed."

Liam gets ready to leave as well, "Not you, Liam." She calls him out, "You stay put."

Malia brings the hammer down on her hand, making an example, "See? It will be quick."

Lydia takes a step back away from the werecoyote, "No." She defies, "Mmm-mmm, not like that."

Malia is confused by the rejection, "You want me to knock you out, right?"

"Render unconscious," Lydia corrects her. She indicates at the hammer Malia still has in her hands, "Preferably without pain."

Malia places the hammer down, "Okay, this is what we're gonna do."

"You're going to press against my chest hard," Lydia decides as she starts formulating a plan. "Constricting the flow of blood and oxygen to my brain. It'll drop my blood pressure and render me unconscious."

"That sounds totally unsafe," Malia comments.

Lydia nods her head in agreement as she sets herself back onto the table, "Oh, extremely."

"Are you sure?" Malia asks, voice full of concern.

"No," Lydia answers taking a deep breath and closing her eyes. "But let's go."

Malia stands over her, placing one hand on top of the other. She pushes down on Lydia's chest, causing the Banshee to gasp out loud. Malia presses on more time, this time Lydia gasps, opening her eyes. Malia starts shaking her head, "I don't think this is-" She starts to say before Lydia suddenly closes her eyes again. "Working," She finishes, before poking Lydia in the cheek.

Lydia doesn't react. Mrs. Finch and Liam are now alone in her class. Liam tries to put a face of innocence, but his teacher sees right through it, "I know what you're trying to do."

Liam doesn't let his act drop, "You do?"

"You're upset and you wanna get back at me," She explains to him.

Liam no longer has to act like he knows what she is talking about, "Upset?"

"Because I stood by and I did nothing for what Gabe and Nolan did to you." She elaborates, "I'm your teacher and I should have protected you."

"No!" Liam shouts, shocking them. "No, I mean, yeah," He stumbles around his words thinking of that day.

Gabe throws Liam into the hall and starts beating and kicking him. He struggles not to transform as Gabe continues punching him repeatedly. Sydney tries to intervene but is held back by the crowd of watching students. Liam's face is bloody and bruised. His eyes glow for just a second, but he maintains his cool much to the newbie hunter's surprise, "You're fighting it." Gabe mutters at him, "But you can't hold it forever."

Mrs. Finch comes from a corner witnessing the attack, "Do something." Sydney implores her.

But Mrs. Finch shakes her head backing away, "Sometimes it's best to let them work things out on their own."

Liam recites a mantra he uses to maintain his composure as the beating becomes more intense with a knee to the face from Gabe, but when the boy sees that his assault isn't working, he stops and leaves Liam lying on the floor.

"That's not why I'm here," Liam tells her. "I know about your pack."

Mrs. Finch furrows her brow at him, "My what?"

"I know what you are," He leans close to her.

"Liam, I..."

"You're a werewolf."

A beat passes before Mrs. Finch laughs at his face, "A what?" She chuckles between breaths, "A person who turns into a wolf on a full moon? Oh, God." She continues laughing. "Yeah, right. And I can probably only be killed by a silver bullet."

"No, no, that's not totally true," Liam tells her.

"Are you on drugs?" She questions him suddenly, getting her laughter under control.

Liam is thrown off by the question, "Huh?"

"Well, I know your father's a surgeon at the hospital."

"No, I'm not on drugs!" Liam denies, "Mrs. Finch, you're a werewolf."

"Hydrocodone?"

"You have a pack."

"Oxycodone?"

"You said it on the phone."

It's at the mentioning of the phone does she finally gets serious, "That's enough."

"You can't hide what you are."

"I don't know what you're talking about, but you really need to go, now," She tells him in a serious tone. "You need to leave this classroom right now."

Liam sighs seeing that he isn't going to get anywhere with his teacher.

A beep fills the class, Hey. It's me again." A woman's voice, her voice, flows from the speaker, "I don't know why you can't seem to call me back..." Mrs. Finch turns her attention away from Liam to Scott, who is standing at the doorway placing the message. "Maybe it's because you think you're punishing me, but this is too long. It's too much, and it's not about us. Something's happening in Beacon Hills, to the people here." She sighs, "I just …"

She snatches the phone from Scott's hands, visibly shaken, "Where did you find this?"

Lydia immediately finds herself in Eichen House. The only Eichen House before it became a proper medical establishment.

She sees a warm light coming from one of the cells. When she looks inside a fire explodes behind the stone version of Halwyn. He busts from the stone and growls at her. Halwyn bangs his head against the glass of the door, causing the glass to crack. The door then opens and Halwyn leaps through it, grabs Lydia, and they both fall through the wall.

Lydia jumps awake, nearly scaring Malia, "He's not dead." The Banshee says in gasping breathes, "Halwyn's not dead. And I know how to save him."

"I told you, I don't know what the Primal is." She tells the two werewolves. "I don't know what an Anuk-a-whatever is." She starts stammering with her words, "I, I was just trying to call my daughter." She holds the phone to him, "Where did you get this?"

Liam doesn't answer her question, "You said you were in a pack." Liam pries, "That was you on the phone, that's what you said."

"And I don't know what business it is of yours," She argues towards him, "My personal life. I am the teacher; you are the student." She rants, "I don't go digging into your personal life outside of these walls, you shouldn't be digging into mine."

"Did you reach any of them before they died?" Scott questions her gently.

"What..." The question has caught her off guard, "What are you talking about?"

"Well, Mrs. Finch, I'm sorry," Scott has a grim expression on his face. "But your family, they were attacked, and they're dead."

"Dead?" She repeats with some shock, "They... No, they can't be dead because..." She shakes her head at the newfound information. "They were just, they were... They were in the woods, they were just, they just wanted to live in peace."

"We found that phone on a body," Scott tells her. "Three men, two boys."

Mrs. Finch is disturbed by the news, "What about my daughter?"

"Well, there was another body," Scott shares. "But, uh..."

"But what?" She practically snaps at him.

"We couldn't identify it," He answers. "The skin was stripped down to the muscle. There was no DNA. Pack tattoo was still there."

"No, that doesn't make sense," She argues, shaking her head. "I mean, that isn't how biology works."

"That's what the Anuk-Ite does," Scott elaborates. "It finds a body and it takes its face. It takes the whole identity of that person."

"Not my daughter." Mrs. Finch says, her voice starting to crack. "No, not my daughter."

Scott gives her a sympathetic expression, looking at the phone, "There's a way to find out."

Dressed as hospital workers with caps and masks, Lydia and Malia wheel Halwyn into the MRI area on a gurney. Malia stares at the machine stumped, "How do we even turn this thing on?"

"By reading the manual," Lydia answers as she pulls up instructions on how to work the machine on her phone. They get it going and pictures of Halwyn's brain begin to resolve.

"Look," Lydia points to the computer screen, "See that image artifacting?" Malia gives her a confused expression, "That means the bullet is ferromagnetic, probably steel. It'll react in the MRI." She explains, "We'll increase the magnet's power, and the machine will pull the bullet right out."

Just as Lydia is about to start the procedure, Malia notices something on the screen, "What are those?"

Lydia stops what she is doing, "What are you talking about?"

"The bullet." Malia points, "It's not just steel. What are those fragments around it?" She points to the white spots that are close to the head wound.

"That's silver. The bullet was coated with it. Silver won't react in the MRI." Lydia explains, "We pull that bullet out and he'll start to heal."

"Healing is good," Malia agrees.

"But he's a Hellhound," Lydia reminds her. "He'll heat up and when he does, that silver is going to melt and seep right into his brain."

Malia can tell that it's not a good reason from Landon's tone, "So, what's a little silver?

"Argyria," Lydia explains using the scientific name, "Silver poisoning."

"And we have no way of getting it out," Malia realizes. "If we take out the bullets, he dies again." Mrs. Finch continues to give Scott and Liam a hard time, "I won't do that."

"Just call her and tell her not to go anywhere near the school," Liam pleads to her, following her closely. "Tell her that someone or something is hunting for someone like her."

"You have to stop talking about this." Mrs. Finch whispers at them.

"If she shows up, at least you'll know what happened to your family," Scott offers to her. "And what happened to your daughter."

"I'll do it for you," Liam offers to her. Lydia turns down the magnets, "There has to be another way."

"Yeah, if we had more time, I'm sure we could figure something out, but we don't." Malia argues looking at the entrance of the MRI room, "Someone is gonna come through that door any second now and bust us." She sees that Lydia is conflicted on what to do, "Our last shot at figuring out how to beat the Anuk-Ite might be lying on that table, so we need to make a decision right now."

"You don't mean decide," Lydia counters in a low tone. "You mean do it."

Malia nods in agreement, "Yeah, I think it's the right decision." Lydia continues to be conflicted, "If it were that other Hellhound, he'd want us to do it." Malia argues, "He'd sacrifice his life for everyone in Beacon Hills."

"But Jordan would be able to make the decision himself," Lydia argues strongly. "We don't know what Halwyn would do."

"We kind of do," Malia states, getting Lydia to finally look at her. "You said he froze himself for hundreds of years so that he could be ready to fight the Anuk-Ite." Malia presses, "The first thing he does when he's unfrozen is to start hunting the thing. If that's the only thing he's ever cared about."

"Then he'd want us to do this," Lydia decides.

Derek and Allison continue feeling the effects of the Anuk-Ite in their patrol of the tunnels. Allison is taking the lead, but the silence between the two of them is broken when Derek makes a heavy sigh, "These tunnels go on forever, and we've been down here for hours."

"No real news from the last time you said it minutes ago," Allison says in an annoyed tone.

"I wasn't doubting the plan minutes ago."

Allison stops with an annoyed sigh and faces him, "If you're so concerned, just go. I mean, no one's forcing you to stay here."

"I'm here, aren't I?" Derek questions her with an equally annoyed tone.

"No, you're here because you don't trust me," Allison argues. "I meant what I told Kate at the warehouse. Scott and the others, they are my family. I meant what I told you about your distrust isn't going to stop me." She clenches her hand into a fist, "Even if right now, I'm more terrified of you than whatever's down here."

Derek watches her gaze drop to his hands, which have been shaking throughout the conversation, which are now claws. However, when he looks up, he says that she is armed with miniature daggers.

Derek lets his eyes glow red as he lets out a snarl before jumping at Allison just as a shadowed figure starts to swing at her.

Liam, Mrs. Finch, and Scott are waiting in her classroom when they hear footsteps coming from the hall, "That's her, isn't it?" She questions Isaac as he readies himself towards the door. "Well, what are you planning on doing?"

"Shh!" Liam whispers.

"You, you're not going to try to hurt her, are you?" She continues questioning Scott, "That's my daughter."

Liam looks to Scott for guidance, who gives him a nod, "We're gonna do what we have to do."

Mrs. Finch is settled with the answer, "What exactly does that mean?"

"Just stay back," Scott advises her.

The footsteps are getting closer and both werewolves, along with Mrs. Finch wait with anticipation.

"Liam?" Scott questions the young wolf.

"Ready."

However, Mrs. Finch is far from ready as she backs herself into the blackboard, touching the wolfsbane eraser. She looks at the backs of the werewolves before she makes her decision and claps the wolfsbane upside each of their heads. They both go down in a coughing fit as she hurries out into the hallway.

Malia is focusing intensely on Hawlyn's body when she picks up a strange noise, "Something's wrong."

Lydia, who is watching the screen, doesn't see anything wrong, "What is it?"

"His heartbeat," Malia answers as the MRI continues clanking, "It's too fast and erratic." The computers in the room with them begin beeping rapidly, "Turn it off! Turn it off!"

A growling sound fills the air around them and they see Halwyn standing from the machine, "Where is it?" He questions them in a distorted voice before collapsing.

Malia rushes to his aid, helping him to sit up, "What's happening?"

"The Anuk-Ite is destroying our city, that's what's happening." Malia answers rapidly, "And we need you to tell us how to kill it."

"Malia," Lydia says trying to get the werecoyote's attention.

But Malia doesn't hear her and continues with question after question, "Does it have any weaknesses? Is there a weapon that we can use?"

"Malia," Lydia says finally getting the werecoyote's attention, "Look at him."

Malia does and her eyes widen when she sees that Hawlyn has silver leaking from his nose, "What did you do to me?"

Mrs. Finch is running the deserted hallway of the school when she comes face to face with her daughter, "Quinn," She calls to her with some relief.

As she tries to move forward, she is struck with fear as her vision begins to blur and she hears a high-pitched tone. However, when her vision returns to normal, she finds her daughter standing in front of her. Her eyes glowing blue, "I'm looking for someone." Her daughter claims in a distorted voice, "Someone like me."

Mrs. Finch shakes her head, "You're not my daughter."

A shriek fills her ears just as Quinn claws her to the floor.

"You killed her," Mrs. Finch claims, backing away from the creature who is wearing her daughter's face,

"You killed my daughter. You killed all of them."

"Tell me who it is," The shapeshifter half of the Anuk-Ite wants to know.

Derek sets Allison up against the wall, "You okay?"

"Yeah, yeah, I'm fine," Allison assures him, holding onto her side. "Where's he?"

"I don't know."

Aaron makes a return with a metal pipe, trying to take a swing at Derek's head.

At the school, the Anuk-Ite is about to attack Mrs. Finch some more.

Derek manages to dodge the weapon and move Allison out of the pipe's path. Before Aaron can continue his assault, Derek manages to claw Aaron in the back of his shoulder.

Quinn suddenly screams as slash marks appear on her shoulder. She leaves Finch alone and takes off running.

Aaron, Derek, and Allison can hear her screams in the tunnels, just before Aaron takes off towards the noise.

"What was that?" Allison questions when Derek kneels to her.

"I don't know, but we gotta find him." Derek decides, "All right, get up, I can't leave you."

Allison shakes her head, "Wait, wait, something's happening." She tells him through pained breathing, "We need, we need to figure it out."

"So, figure it out," Derek snaps at her.

But when she grunts, Derek realizes that she can't focus through the pain. He removes the gloves off her hand, but as soon as he touches her, he realizes that she was in a lot more pain than she had let on as his pain transference ability kicks in instantly.

"I thought…"

Allison shakes her head, "I haven't been in Beacon Hills in a long time," She explains in a tired breath.

At the school, the supernatural imposter is hiding and showing visible pain. She hears footsteps running and takes off running leaving behind a blood trail on the walls.

Scott and Liam find an injured Mrs. Finch in the hallway, "Wait, I'll stay." Scott decides, "Go find Quinn."

"Whoa, whoa, we need to face her together," Liam argues. "What if she finds Aaron first?" He questions clearly scared that the prospect, "How am I supposed to fight both of them?"

"Liam, it's okay to be afraid," Scott tells him. "Just don't let it stop you, okay?" Liam remains unsure, "You've got this." Scott tells him in a confident tone, "Now go."

Aaron is running in the tunnels unable to get a read on Quinn's voice. He looks at the wounds he has received from Derek's claws. They don't appear on his body, but he gets an idea and circles back.

In the same spot, Derek releases Allison's hand as he continues to take more of her pain. "This isn't going to cut it," Derek decides. "Put your arms around me, I'm carrying you out of here."

Allison follows his instruction and Derek carries her in a bridal style fashion, but as soon as he starts making their way out of the tunnels, they spot Aaron waiting for them.

Allison feels the rumble in Derek's chest as he sets her down to her feet, "Derek…"

"Stay down," Derek orders her.

Aaron comes at Derek and slams into the wall of the tunnels. Derek is about to shove the boy back when Aaron suddenly grabs his claws and stabs himself with them.

At the school, Quinn continues to experience the pain from Derek and Aaron's fight. She continues to roar out in pain.

Finally getting what he wants, Aaron shoves the Alpha back to the ground with Allison hurrying to his side.

In the hallway, Scott is trying to keep Mrs. Finch conscious, "Hold on, Mrs. Finch." He tells her as he tries to keep her head up, "We're gonna get help." He tries to call Isaac, but it seems his phone keeps going to voicemail, "You just, you need to hold on a little bit longer, okay?"

As he inspects her torn clothing, he notices the Primal tattoo on her bicep, "Mrs. Finch? Hey, I need you to look at me, okay?" The woman kind of does, "You have to trigger your healing. You need to shift."

"I'm sorry," Malia says in a sad tone as she and Lydia are sitting on the MRI floor with Halwyn, "It was the only way to revive you."

He gives them an appalled expression, "Revive me so I can die?"

"No, so you could help us," Lydia counters. "Tell us how to stop it."

"You can't stop it." Halwyn breathes a shuddering breath, "You can't kill it."

"But you did."

"I trapped it," He corrects the Banshee.

"Well, how do we do that?"

Halwyn makes a grunting pain as silver starts leaking from his eyes and mouth, "Don't let it find its other half."

"How do we know it hasn't found it already?"

"Because you wouldn't be alive to tell me," Halwyn answers in a panting tone. "Keep them apart. It's still weak." He continues to show signs of struggling to breathe, "One of them isn't so weak, it's supernatural."

Micah questions, "Shapeshifter?"

"A werewolf," He answers weakly. "You can't let the two halves merge. If you do, you won't be able to catch it."

He grunts in pain and Malia immediately takes a hold of his hand, taking some of the pain away, "We shouldn't have done this," Lydia says softly, tears shining in her eyes. "I am so sorry," She apologizes in a broken tone.

"I'm sorry too," Malia whispers to the dying Hellhound.

"Okay, listen to me, if the two become one, do not look." He warns them, "It will kill you with a look."

With that statement, Halwyn finally dies.

Liam finds Quinn in the library. And though he is visibly afraid, he repeats, "Stay Afraid."

But Quinn ignores his presence as she senses someone else is in the library with them.

Aaron appears from the shadows and the two halves of the Anuk-Ite stare at each other before they face Liam.

Liam lets his eyes glow yellow as he flicks out his fangs as he releases a mighty roar.

Two hunters and Liam's biology classmate, Gabe, enter the school with guns. They stalk through the halls not noticing the pool of blood that Mrs. Finch has left behind.

In a classroom, Scott is still trying to persuade the teacher to heal, but she's is too distraught about what she has learned, "It's my fault. I pushed her away." She tells him, "I forced her to run to them." She explains to him, "I forced her to hide who she was."

"You need to shift, or you're gonna die." Isaac tells her, "Do you get it? You'll die."

"Oh, Quinn," She mourns. "Quinn..."

Scott sees that she is too deep into her grief to heal herself and takes her by the face, forcing her to look at him, "Your daughter's gone." She tries to look away, but Scott doesn't let her, "Quinn is dead."

This seems to resonate something within Mrs. Finch as she releases a roar and glowing red eyes.

Liam leaps from table to table, crossing the space between himself and the two halves of the Anuk-Ite.

He jumps toward Quinn. She punches him in the chest and sends him flying back. She and Aaron kiss and spiders flow through their mouths into each other. Quinn then headbutts Aaron. They grab each other by the throat and squeeze. They seem equally matched, but Aaron manages to break Quinn's neck. Spiders inside her climb out and into him. His eyes glow purple.

Energy begins swirling around Aaron like purple smoke. His body twists and contorts with the sound of breaking bones as he cries in pain. Inside the swirling vortex, his body begins to change, elongate, and stretch. When the purple smoke clears, what appears to be a hollow-eyed skeleton with only a thin layer of musculature stretched tight on its frame stands where the boy was before. It has no mouth and its eyes swirl with eddies of purple energy.

Liam can't see the creature, but he can hear it and prepares to face it. Just as he is about to get up from the spot he was thrown in, Lydia grabs him from behind and throws him out of the library door. He is surprised by her sudden appearance, "We have to run," She tells as she grabs him by the arm and rushes him down the hall.

"What are you doing here?" He questions obviously confused, "Quinn and Aaron merged, we have to stop them."

"You can't," Lydia answers as she pushes through the double doors and outside the school, "You can't look at it. If you do, it'll kill you."

Gabe overhears this and hides as his two hunter friends continue down the hall.

The Anuk-Ite rounds the corner of the hall. As it turns toward the men, the purple energy flares in its eyes and both men turn to stone. Gabe witnesses this but shuts his eyes tightly and doesn't see the creature as it calmly exits the school.

The Anuk-Ite arrives at the hospital. Everyone that crosses its path is turned to stone. In the morgue, the creature examines Halwyn's dead form, "Not what you were hoping to find?" Gerard Argent questions it, "You'll forgive me for not looking you in the eye while talking." Though his back is towards the creature, Gerard is obviously terrified, "I've heard the stories of how lethal it can be. I know what you want." He tells the creature, "You want your freedom. That means getting rid of one thing that stands in your way."

A demonic voice answers. "The Nemeton."

"That's right," The elder Argent agrees. "Only it's no longer in the form of what you remember. It's in the form of Stiles Stilinski, someone who you would have no problem matching in a physical fight, but you'd be surprised at how resourceful she can be."

The Anuk-Ite questions him, "Your offer?"

"I will weaken her for you with the proper poison," Gerard offers. "Then, you kill her and her friends, and that will give you all the fear you need to never be caught again."

The Anuk-Ite is smart enough to question him again, "And you?"

"I'll drive every last one of their kind from Beacon Hills," Gerard declares.

The Preserve members, Derek, and Allison are examining the stone bodies that are left behind in the hall, "How do we fight something we can't look at?" Malia questions.

"We have to learn to fight without our eyes," Scott answers.

"Fight without seeing," Liam comments in a knowing tone. "Do we know someone who's blind and can fight?"

"Deucalion," Derek answers.

Lydia shakes her head, "Just fighting it, isn't going to be enough." She faces the group. "We're going to need help."

Allison questions, "What kind of help?"

At Eichen House, Isaac has apparently fallen asleep, holding Stiles' hand.

Lydia answers, "Before he was completely gone, I managed to hear Hawlyn, in my head. He said that when it does merge, we need to catch it again."

He starts just slightly when he feels pressure in his hand and a weak voice, "Scott?"

"He's okay," Isaac responds, sitting up quickly. Stiles opens her eyes, revealing a silver flicker before they returned to normal. "He just had to handle something real quick."

"We're going to catch it and trap it with the help of the Nemeton."