[3x15; Galvanize]

Peter was lucky to have Olivia and Derek. Most people wouldn't help someone who had murdered and injured more than one of their family members. In fact, if Peter wasn't her father, Olivia wouldn't even be in the same vicinity as him, let alone help Derek sew his finger back on.

But, that's where she found herself. She hovered behind Derek as he and Peter sat at the table in Derek's loft; Derek had taken upon himself to sew Peter's finger back on after the Calaveras' head honcho cut it off. Thankfully, Peter put the finger on ice once Braeden got the two of them out of the hunters' grasp.

Olivia wasn't afraid of blood, but even the sight of her cousin sewing on her father's finger caused some nausea. Thankfully, it was over soon; Derek worked quickly, ignoring Peter's complaints in a way that Olivia couldn't. If she hadn't known the year Peter was born, she would have thought he was six years old. Peter Hale could dish out the pain without a problem, but he certainly couldn't take it.

"Ow," Peter hissed as Derek finished up his almost-perfect sutures. "Don't you have any anesthetic?"

Derek gave him a blank look, setting the small pair of medical scissors on the table next to him. "Yep."

Olivia snickered. "You know, I really thought you'd have a higher pain tolerance,"

Peter rolled his eyes at her. "Shut up," he turned back to Derek and with a whine to his voice, asked, "Are you at least going to tell me what I risked life and digit for?"

"Yeah, actually, I'd like to know that, too," Olivia added, crossing her arms over her chest. "And, you know, why I had to hire a mercenary to get you guys out of there..."

"I'm going to show you," Derek got up from his seat and took only a minute or so while he went up to his room and came back down. He carried a cylinder box made out of some sort of wood, with a triskele carved into the lid; he opened it and carefully slid out its contents. "After the fire, that's all that was left of her."

Talia Hale's claws clattered onto the table and Olivia almost flinched. Even though Talia was long dead, she could still feel power radiating off the claws. And that power? It felt like her Aunt Talia. It wasn't necessarily a tether like her pack members, but there was a slight glow to them on her mental map that caused her pause.

That's why Derek went, she realized privately.

Peter's eyes narrowed in recognition as he looked at his sister's claws. "Talia. I can't decide if that's touching or morbid," he raised an eyebrow at Derek. "I guess the real question is, what are you planning on doing with them?"

Derek hesitated before answering. "I have to ask her something," he finally revealed. "and from what I've heard, this is the only way possible."

Realization dawned on Peter's face. "You gotta be kidding me."

"Why do you think I sewed your finger back on?" Derek's lips turned up slightly into a smirk.

Olivia wrinkled her nose. She hadn't known what Derek was going to do with Talia's claws, but from context clues, she figured it out. Peter would connect to Talia's claws and then do the alpha ritual on Derek, where he peaked into Derek's subconsciousness through his spinal cord. It was a painful procedure and each time Olivia witnessed it, some part of her heart ached.

Even though she did want to know what Derek spoke to Talia about, she couldn't watch him go through with the ritual. It honestly didn't matter much, either way, because she had to get going in order to fetch Stiles from his house so they could get to school on time.

"That's my cue," she patted Derek on the shoulder before heading to the door. "I'll call you later, Der."

"Have fun at school," he mumbled in reply.

Much to her surprise, when she got to her car, Isaac was waiting for her in the passenger seat.

"What are you doing here?" she wasn't upset about his presence, but merely curious.

She slid into her seat and buckled her seatbelt, starting her car. She pulled away from Derek's building and took a left, heading into town so she could pick them up some breakfast. It would butter Stiles up to Isaac's attendance.

Isaac shrugged. "Scott took his bike, so I thought I'd get a ride with you."

"You walked all the way to Derek's loft from Scott's house to get a ride to school?" Olivia laughed.

"Well, any opportunity to annoy Stiles, and I'm there," Isaac chuckled with her.

Olivia shook her head in amusement. Only Isaac...

After a quick stop at the McDonald's drive-through, Olivia was pulling to a stop at the curb in front of Stiles' house. Isaac clambered into the backseat, almost hitting her in the face two separate times with his long legs, as Stiles bounced out of the front door and made his way down the sidewalk.

"Good morning, beautiful!" he was very cheerful today and Olivia knew it wasn't because it was from his lack of nightmares—because he certainly had one. No, he was happy because today was Mischief Day, the day before Halloween. "Mwah!"

The placement of his lips against her cheek with a noisy kiss made Olivia grin. "Morning, sweetcheeks."

"Good morning!"

As soon as Stiles heard Isaac's voice, he deflated. He whipped around and faced the backseat, a scowl on his face. "Ugh, what are you doing here?" he complained; as he reached for the handle of his door, Olivia locked the doors and pulled away from the curb. "Livvy, let me out. I'll drive myself."

"No, you won't," she said firmly. "Wednesdays are my days to drive."

"Well, why'd you bring Isaac?"

"I brought myself," Isaac told him smugly. He reached into the McDonald's bag and pulled out Stiles' breakfast sandwich amongst the wrappers from his biscuit and Olivia's bagel, tossing it at him. "Breakfast."

"Thank you," Stiles grumbled at Olivia as he turned to face the front once again. He unwrapped his sandwich with a grouchy look on his face. "Now Mischief Day is ruined."

"No, it isn't, Mr. Mischief," Olivia rolled her eyes. "If anything, Isaac riding with us is mischief..."

"That doesn't make me feel any better."

"Oh, get over yourself," Isaac rolled his eyes; Olivia caught the action through her rear-view mirror and tried to hide her grin.

"You get over yourself."

"No, you get over your—"

"Okay, both of you, shut it," Olivia interrupted their ridiculous argument. "I don't want to hear another word from either of you until we get to school."

"But—"

"Shush."

"Yes, Mom."

"Isaac Lahey."

Olivia wasn't as annoyed as she portrayed herself. It was actually kind of amusing to see Isaac and Stiles fully chastised for their little spat. Nevertheless, the only noise throughout the rest of the drive to the school was some alternative song that Stiles had turned on

"Look," Isaac spoke as Olivia was parking. "the twins are here."

Olivia and Stiles followed his gaze and saw that he was right. Ethan and Aiden's bikes were parked neatly in the two spaces next to Scott's. Scott had already abandoned his bike and was talking to them, looking affronted.

Stiles' face hardened and in that moment, he and Isaac had something to agree on; they both could not stand Ethan and Aiden.

Stiles and Isaac rushed out of the car and Olivia briskly followed them, making sure that her car was locked securely.

"You're back in school?" they heard Scott ask the twins.

"No, just to talk," Ethan answered him.

"Oh, that's kind of a change of pace for you guys," Stiles snarked as he came to a stop on Scott's right; Isaac joined the alpha's other side. "Usually you're just hurting, maiming, and killing."

Aiden chose to ignore Stiles, keeping his eyes on Scott. "You need a pack, we need an alpha."

"Yeah, absolutely not," Stiles answered for Scott. "That's hilarious, though."

Aiden narrowed his eyes at Stiles while reminding Scott, "You came to use for help. We helped."

"You beat him up, two to one," Olivia spoke up, her voice hardening. "And then when he was down, you had to be stopped by your brother."

"Yeah, in my opinion, that was actually counter-productive," Stiles added as he took her hand, intertwining their fingers.

"Why would I say yes?" Scott asked, though he looked to be humoring the twins, more than actually considering them as pack members.

"We add strength, we'd make you more powerful," Aiden pitched. "There's no reason to say no."

Stiles rolled his eyes, Olivia scoffed, and Isaac sneered at them, "I can think of one. Like the two of your holding Derek's claws while Kali impaled Boyd." Olivia nodded in agreement with Isaac, her heart aching at the thought of her dead pack mate. "In fact, I don't know why we're not impaling them right now."

Aiden growled at them, his eyes glowing ice-blue. "You wanna try?"

Olivia couldn't believe his audacity. She held out a firm hand, sending her own purple-tinted glare at him. "You need to back up," she ordered firmly, allowing her voice to shift and take control of him.

Aiden's eyes dimed back to their normal brown, but his glare stayed.

"Sorry, but they don't trust you," Scott glanced between Ethan and Aiden, his gaze lingering on the latter and his wicked temper. "And neither do I."

The four of them walked past the twins without another word—though, Isaac did send them a triumphant smirk as he passed.

As soon as they walked into the school, Stiles was decked in the face with a roll of toilet paper.

"All right, that's my fucking face!" he growled as he whipped the roll back at Greenberg. He patted Scott on the chest as they continued on to his locker. "Hey, dude, good decision, buddy. Good alpha decision."

Scott winced sheepishly. "I hope so."

"No, you know so," Olivia loved Scott, but he wished that he would see people the way they were, not the way he hoped them to be. Ethan and Aiden had a large part in Boyd's death, like Isaac had just mentioned, and they were also part of the pack who killed Erica. Sometimes, people couldn't be redeemed.

"Exactly," Isaac pointed at her in agreement.

Stiles, who had successfully closed the door to his mind after Malia's transformation back to a human girl, easily dialed his combination and unlocked his locker. He started unpacking his very full backpack, unloading his various Mischief Day pranks.

Scott nudged Olivia while Stiles was focused on his bag. "Hey, what did you say her name was again?" he nodded down the hall and Olivia saw that he was looking at Kira, who was at her own locker.

"Kira Yukimura," she informed him. "She's really sweet. Why?"

Scott shrugged. "Just wondering."

Isaac and Olivia exchanged an amused look. "Right, okay."

Stiles glanced at them. "What are you guys looking at?" he followed their gaze, saw Kira, and then looked back at Scott, "You looking at her?"

Scott immediately looked away from Kira, flustered. "Her? Who her?"

"Her-her," Stiles rolled his eyes. "Kira. You like her?"

"I thought you were into Lydia now," Isaac mentioned idly; Olivia smirked when Scott's eyes widened in shock.

"What? No!" he shook his head quickly. "I mean, may—no! She's okay, they're both okay...Kira's new."

Stiles shook his head and carefully placed a carton of eggs into his locker. "Yeah, that made a lot of sense, buddy. Just ask her out."

"Who, Lydia?"

Olivia rolled her eyes. "He meant Kira, Scott."

"Now?"

"Yes, now," Isaac encouraged him.

"Right now?"

"Right now," Stiles slammed his locker shut after grabbing his econ textbook and turned to face Scott head on. "Scott, I don't think you get it yet. You're an alpha. You're the apex predator—"

"Please don't call him a predator while trying to convince him to ask Kira out," Olivia interjected with a gentle shudder.

"Makes sense," Stiles nodded at her before going back to Scott. "My point is, everyone wants you. You're like the hot girl that every guy wants."

Scott raised his eyebrows, confused. "The hot girl?"

"You are the hottest girl," Stiles poked him in the chest with a wink.

His words must have finally gotten through to Scott, because the alpha nodded with a small, but cute smile on his face. He looked up at Isaac and announced, "I'm the hot girl."

Isaac nodded seriously. "Yes, you are."

Scott giggled cutely before walking away.

Olivia watched him go, shaking her head. "You three are the oddest people I've ever met."

Isaac laughed at her and followed Scott while Stiles scoffed, "Says you," he grabbed her hand as they walked down the hallway to her locker. "Aren't you the teenager whose favorite ice cream is vanilla?"

"You know I don't like ice cream that much," they reached her locker and she swiftly unlocked it. "Now, should I be jealous that you called Scott the hottest girl while I was standing right next to you, or...?"

"No," Stiles leaned against her neighbor's locker, smiling down at her. "Want to know why?"

"Why, Stiles?"

"Because hot doesn't even begin to describe you, Livvy," he cooed sweetly, making her giggle.

"You're lucky I love you," she poked his cheek. "otherwise, you'd be too cheesy for me."

"You like cheese."

"On my pizza," Olivia shut her locker with a laugh, cradling her econ textbook in the crook of her right arm. "Now, did you want to catch the show are you gonna sit around all day and miss it?"

Stiles' eyes lit up at the reminder. Last night, or early this morning, Stiles and Scott had come to the school to prank Coach. It was his birthday and apparently the best friend duo had been pranking him on Mischief Day since they entered high school. It was a sort of tradition for them and Stiles said it was always good fun, but Olivia had never witnessed one of these pranks herself.

She would never tell Stiles, but she was kind of excited about it.

"Yes!" he grabbed her free hand and started pulling her down the hall.

When they entered Coach's classroom, Stiles had insisted on sitting in the front row, so he had a good seat for all the chaos that he and Scott had reined upon Coach. Olivia sat behind him and when Lydia and Scott came into the classroom together, a moment or so later, they sat next to them. The bell rang and there was still no sign of Coach—but then, they heard what was going on next door.

What sounded like furniture collapsing to the floor came from Coach's office. Not a second later, they heard him shout, "Son of a bitch!"

Stiles broke out into a round of snickers, his whole body shaking, and Scott grinned in amusement. Olivia let a smile appear on her lips as she glanced at Lydia, who shook her head, an expression that somehow held both annoyance and amusement painted on her face.

The door that connected Coach's office and the classroom was forced open and then slammed quickly as Coach entered the room. "Mischief Night, Devil's Night," he grumbled, glaring at the students as most of them laughed. "I don't care what you call it. You little punks are evil. You think it's funny that every Halloween my house gets egged?"

The general consensus was yes, everyone thought that Coach's house getting egged was funny.

"A man's house is supposed to be his castle! Mine's a freakin' omelet..." Coach turned to his desk and spotted the wrapped gift that Greenberg had deposited before he took his seat. "Oh, this? We're gonna do this again? I don't think so!"

Coach whipped the present onto the ground and stomped on it. A surprised look flashed onto his face when he heard glass breaking; Stiles' laughter increased into a small roar.

Coach picked up the present, a mug with his picture on it, which was now broken, and glanced at the card. "Happy birthday," he read. "Love, Greenberg."

The slightly chastised look on Coach's face made Olivia laugh. Her giggles died down when Lydia's tether pulsed. She turned to her cousin and saw her on her phone, swatting the air around her head.

"Lyds, what are you doing?" she leaned over to her desk and whispered.

"There's a fly," Lydia mumbled in response.

Olivia narrowed her eyes and looked around; she didn't see any flies.

-

-

When Stiles had gone to get his wallet out of his backpack so he could buy his lunch, he definitely didn't expect the police to walk into the school. Many of the deputies were led by his dad, while some of the suited agents walking around were brought by Agent McCall. Even more shocking than the force's appearance was the reason for their visit.

"Wait a minute, wait a minute," Stiles rushed after Noah after being given a distracted response about why they were at the school. "The William Barrow? The shrapnel bomber? He was spotted nearby?"

Noah turned and stopped, giving the students who were on their lunch break and surrounded the hallways a nervous look. "A little closer than nearby, actually," he corrected Stiles, lowering his voice.

Agent McCall walked by them, the vice-principal at his side. "How do we get down to the basement? I need to know where every entrance is. I don't want anybody coming in or out of the school."

This was more serious than Stiles thought.

"Dad," he looked at his dad with wide eyes. "what's really going on here?"

It didn't take long to discover what was happening. Noah quickly explained that William Barrow had come into the hospital for surgery but had instead escaped. They followed him to the school and they were trying to find him before he ended up killing more people. The scariest part about William Barrow was the fact that he went after kids with glowing eyes.

That meant that Olivia, Scott, and Isaac were in trouble.

He quickly found his friends at the table in the cafeteria where he left them and ushed them out of the overcrowded room. Scott wasn't with them, but he told Olivia, Lydia, Isaac, and Allison what was going on and what—or who—William Barrow was after.

"Barrow went after kids with glowing eyes?" Isaac repeated in disbelief as the five of them wandered along an empty hallway on the second floor of the school. "He said those exact words?"

"Yeah," Stiles squeezed Olivia's hand, assuring himself that she was safe next to him. "and no one knows how he woke up from anesthesia. Just that when they opened him up, they found a tumor full of live flies—which, in any other circumstance, would be all kinds of awesome."

"Maggots coming from the body is a thing, but I've never heard of flies in the stomach," Olivia muttered thoughtfully.

Lydia stopped walking abruptly. "Did you say flies?"

The rest of them stopped with her.

"Lydia?" Allison prompted an explanation from the redhead.

"All day I have been hearing this sound," Lydia explained, pressing her lips together in frustration. "It's like this...buzzing..."

Olivia frowned in realization while Allison asked, "Like the sound of flies?"

That's why Lydia's tether lit up in econ, Olivia realized in dismay, her banshee powers were picking up Barrow at the school.

Lydia nodded grimly. "Exactly like the sound of flies."

It was quickly decided that they needed to split up and find Scott, since he was missing in action. With three floors to search, Allison and Isaac took the top, Lydia and Olivia took the second, and Stiles took the floor level. While they were trying to find Scott, they also had to avoid the police, who were doing their own search for Barrow.

Five minutes before the lunch period was over, Stiles found Scott outside of Mr. Yukimura's classroom. "Hey, dude, where the fuck have you been?"

Scott opened his mouth, but didn't get to answer, as Olivia and Lydia came storming up to them.

"The police are leaving," Lydia told them. "Why are they leaving?"

Scott winced in surprise. "The police?"

"They must have cleared the building and grounds, which means he's not here," Stiles told her.

Olivia shook her head in disagreement. "No, he has to be here," she insisted, her eyes traveling to her cousin. "Tell him, Lydia."

Stiles gave the redhead an expectant look.

"The sound, the buzzing I've been hearing? It's getting louder."

Stiles heart sank. "How loud?"

Olivia's eyes flashed purple. "Loud enough that I can hear it."

Yeah, okay, Stiles glanced between them, that's pretty loud.

Within minutes, Stiles found himself chasing his dad and Agent McCall—along with other deputies and FBI agents—to the parking lot. "Dad, Dad, you can't leave yet!"

"We got an eyewitness that puts Barrow by the train station," he dad explained.

"Let's go, Stilinski!"

Noah went to follow McCall, but Stiles stopped him.

"Dad, please...Lydia said that he's still here."

Noah's eyes widened slightly. "Did she see him?"

"Not exactly, no," Stiles grimaced; he hadn't exactly told him what Lydia was yet. "Well, not at all, actually. But she has a feeling. A supernatural feeling."

Noah turned his eyes away from Stiles in order to look at Olivia and Lydia, who had followed Stiles out of the school. While Lydia looked away, acting like she wasn't listening to their conversation, Olivia slapped on a sweet smile and waved at him.

He waved back at her and then looked back at Stiles. "Lydia wasn't on the chess board."

"She is now."

"Kanima?"

Why did his dad think everyone was a kanima? "Banshee."

"Oh, God."

"I know how it sounds, but basically, it means that she can sense when someone's close to death," Stiles explained rapidly. "And you know what Livvy is, okay, and she's got a bad feeling, too."

"Do these feelings tell them that I'm about to kill you?" Noah retorted, raising his eyebrows.

"I don't know," Stiles looked back at Olivia and Lydia, and this time, it was Lydia who waved at Noah.

"All right, look," Noah leveled him with a calm, yet stern, stare. "I'm not saying I don't believe, but right now, I'm going with eyewitness over banshee and anchoram. We're leaving the deputies here. The school's on lockdown till three o'clock. Nobody come in, nobody comes out. Buddy, that's the best I've got right now. That's the best I can give you."

"You're leaving me here," Stiles objected as Noah turned and ran away from him, joining McCall and his agents. "That is not—that is the worst!"

Betrayal, in its purest form. That's what he was feeling at the moment. How dare his dad just leave him here, ignoring his warning about Barrow? Why didn't he just drop him off at the firehouse when he was an infant? It was the same type of abandonment!

Okay, he was being dramatic, but still...

Well, finding William Barrow was up to them, now.

-

-

Olivia, Stiles, and Lydia met with Allison in an empty classroom. While Scott and Isaac, along with Ethan and Aiden, would search the basement and floor level, and Olivia, Lydia, and Stiles would search the upper levels, Allison would be sneaking out of school in order to go home and search through the Argent's bestiary for some kind of explanation on Barrow's stomach flies and ability to wake up from full-blown anesthesia.

"The bestiary is literally a thousand pages long," Allison stated as she opened one of the windows leading to outside. "if I'm going to find anything about flies coming out of people's bodies, it could take me all night."

"If you go to the find button in the word document, you should be able to search for flies," Olivia pointed out.

Lydia nodded in agreement. "And remember, the word in archaic Latin for fly is musca."

"Got it," Allison climbed out the window.

Lydia turned to Olivia and Stiles. "Where do we start?"

"Upstairs," Stiles answered. "Let's go."

An hour later, after searching the second floor for any sign of Barrow, they moved onto the third floor. The drawing room was the second room they searched on the floor, right after the room that was reserved for painting.

Olivia soon received a text message from Isaac, informing her that he and Scott were moving onto the floor level while Aiden and Ethan finished up the basement.

"Are they still in the basement?" Lydia asked her.

"Scott and Isaac moved on, but Ethan and Aiden are," Olivia answered, slipping her phone back into her bag. "The twins had to search the boiler room and then they're meeting up with Scott and Isaac."

"Fuck!" Stiles' sudden curse caught Olivia and Lydia's attention. "All the wolves, the majority of the students with glowing eyes are either in the basement or the first floor. An engineer could use a boiler room to blow up the whole fucking school."

Olivia cocked her head and disappeared into her mental map. There were no whispers warning her about her or her pack mates, no names floating through her head. Every tether on her map was safe, other than the slight pulsing from Peter and Derek's—which she assumed was because they were either still doing the alpha ritual or they were recovering from it. So, they were safe from Barrow, right?

But Lydia was still hearing that buzzing. She could hear it, too, if she dived into her cousin's tether. Barrow was still in the school, somewhere, but her powers weren't warning her about anything...

Why aren't there any warnings? She thought, almost frantically. William Barrow is here.

While lost in her head, Olivia missed the significant look that Lydia and Stiles shared. "We have to get them out," Stiles proclaimed. "We have to get everyone out."

"How do we do that?"

Like any other problem in their very problematic lives, Stiles had an answer. Within the next few minutes, he had pulled the fire alarm and was caught by Coach, who claimed that if he was younger, he would have punched him. He had also earned himself a week full of detention.

School ended while students piled out of the building for the drill, which meant that the lockdown was over. Olivia, Stiles, and Lydia joined Scott, Isaac, Ethan, and Aiden near the parking lot to see if they found any sign of Barrow.

"We didn't find anything," Aiden reported.

Scott nodded in agreement. "Not even a scent."

"It's three o'clock, so school's over," Stiles sighed. "If there was a bomb, wouldn't he have set it off by now?"

"I've got nothing," Olivia clenched her jaw, wishing that her abilities were giving her something to work with. "I'm not getting any warnings..."

Ethan raised his eyebrows. "Does that mean everybody's safe?"

"That's what she means," Isaac snapped at him in Olivia's defense. He then glanced at Lydia, thoughtfully. "but if you are hearing the flies..."

Lydia shook her head, just as lost as everyone else. "I don't know," she said sadly. "I just don't know."

-

Sirius knew that something was wrong with his girls. Lydia was hiding in her room and Olivia's face was snuggled into his fur as the two of them laid on her bed. The way her dog squirmed underneath her ear gave Olivia the hint that her anxiety was rubbing off on him. It made her feel bad; she rolled away from Sirius and onto her stomach, resting her chin on her forearms as her eyes landed on her boyfriend's figure across the room.

Stiles had opted to come over to her house instead of his, even though he would have been more comfortable in his house, with his own walls made up like a crime board. Even though Olivia had objected at first, it hadn't taken much coaxing for Stiles to convince her to allow him to set up a brand-new crime board on the large corkboard of her wall, which usually held pictures of her friends and family. She just couldn't resist the weirdo, especially when he pulled out four different balls of colored string—blue, yellow, green, and red—out of his backpack.

"Do you always keep those in there?" she had asked him. He had blinked back at her, almost innocently, and answered, "Yeah, why?"

So, now she watched the love of her life in his element; solving cases was what he was best at. Like her own personal, sexy Sherlock Holmes—she much preferred him to Benedict Cumberbatch.

"Okay, so green is solved, yellow is to-be-determined, and red is unsolved," Olivia hummed as Stiles pinned yet another piece of red string to connect a picture of William Barrow and one of the Eichen House. "What does blue mean?"

There were about three pieces of blue string that hadn't made much sense to her. The rest, she could somewhat follow.

"Blue is pretty," Stiles turned and winked at her. Her heart warmed, remembering the last time he told her that—his favorite color was blue, like her eyes.

"Well, yeah," she smiled as he sauntered over to her, plopping down onto the bed beside her. Sirius scurried off the bed, unnerved by the bounciness of the mattress. "but what does it mean in term of the investigation?"

"Nothing really," Stiles admitted. He leaned closer to her and brushed his lips on her forehead, just above her right eyebrow; her heart started racing. "It's different for each crime board. Today, it's the same as red."

Olivia pressed her lips against his, pulling back quickly. "You only have red on the board."

"Yes," Stiles rolled his eyes and laid on his back with a sigh. "I'm aware of that, thanks, baby."

Olivia shuffled closer to him and shifted so half of her body leaned against his. "I don't get it," she admitted, resting her chin on his chest as she studied his face. "Lydia felt Barrow at the school. And I did, too, it's just...I feel like my powers weren't working."

Stiles frowned and brushed his thumbs over her flushed cheeks. "What do you mean?"

"The tethers, none of them were giving any hint of trouble. When I looked at them, I knew that everyone in the pack was safe. Yet, when I dived into Lydia's, I could hear the flies buzzing. Just like her," she sighed in frustration. "It's so contradicting, it's maddening. And we didn't even find any physical proof of Barrow being there."

"Livvy, you've been right about this kind of stuff before. So has Lydia," Stiles comforted her, wrapping his arm around her shoulders to pull her closer against him. "and maybe the fact that you weren't feeling anything and Lydia was is a hint."

"What do you mean?"

"You know if your pack members are in trouble...What if someone who's not in the pack is who Barrow was after?"

Olivia cocked her head thoughtfully. "That makes sense," she mused. "but still, if he was at the school, the wolves didn't scent him."

"What if he didn't smell like himself? What if he changed his scent somehow?" Stiles bounced another idea off of her. "I mean, you said yourself that Lydia was right. Barrow was there. What if he, fuck, what if he changed into someone's gym clothes. Or he used some girl's perfume...What if he—"

Olivia sat up, her eyes widening in realization. "The chemistry lab. He could use chemicals to completely hide his scent. If they were strong enough, it'd be like he never stepped foot into the school."

Stiles grinned widely at her. "We are geniuses," he pecked her on the lips and then patted her butt. "Get Lydia. We need to go to the school."

-

Since Mr. Harris' tragic death, there hadn't been a science department head. If he was still alive, getting into the large closet of the school's chemicals would be infinitely harder because Harris was known to stay late after school. Now, though, with Stiles' lock-picking skills, it was easy to break into the senior chemistry lab where the closet was located.

Now, Mr. Harris was a dick, but he was the only science teacher who knew what he was doing at Beacon Hills High School. With science being Olivia's favorite subject, he had been her favorite teacher, of sorts—she purely respected him for his knowledge, not his attitude. For the first time since his death, Olivia didn't mind that he was gone.

Yeah, she knew how horrible that sounded. Ultimately, though, Mr. Harris had helped Kate Argent set the Hale house on fire—who went around telling random women ways to get away with arson? —and the fire led to most of the things that had gone wrong in her life.

"So, what are we looking for?" Lydia asked as they entered the room. Though Stiles and Olivia had brought her up to speed on why they were going to the school, some of the details were still kind of lost on her. She watched as Olivia frowned at the chemical closet and opened it, the key already in the doorknob. "That's supposed to be locked."

"Yeah, exactly," Stiles muttered, walking into the closet. "Notice anything else?"

Lydia inhaled and studied the closet. "It smells like chemicals," she realized. "You guys were right, they wouldn't have been able to catch his scent."

Olivia hummed and pulled out her phone, turning on its flashlight and pointing it at the floor. The three of them flinched when they saw the small puddle of blood on the floor; Stiles even got a little green around the gills, which wasn't surprising due to his slight fear of blood.

"Gross," he groaned quietly. "He was here, preforming very minor surgery on himself."

"Lydia, you were right," Olivia reached for her cousin's hand, squeezing it lightly. "Your instincts were right."

"Then why don't I feel good about this?"

"Probably because he was here to kill somebody."

"Kids with glowing eyes," Olivia mused. "but they're not part of the pack. Which narrows it down it down to..."

Lydia shrugged. "I have no idea."

"We gotta figure it out," Stiles decided. "Spread out, start looking for anything."

The girls did as he said, leaving the chemical closet. While Stiles started on one side of the classroom, looking through some of the lab tables, Lydia walked toward the teacher's desk, and Olivia searched some of the cabinets that held the lab equipment.

"Lydia," Stiles noticed that Lydia drifted toward the chalk board absentmindedly and saw that she was staring at a set of three numbers. "what are those?"

19. 53. 88.

"Atomic numbers," Lydia answered as he and Olivia moved to her side.

"Is it a formula?"

"No," it was Olivia who spoke this time. "Nineteen's Potassium. Fifty-three is Iodine. Eighty-eight is Radium. The first two make Potassium Iodide."

Olivia picked up a piece of chalk and started writing the atomic symbols next to their corresponding numbers.

19—K

"Potassium is K?" Stiles interrupted her writing.

Olivia nodded. "From Kalium, the scientific neo-Latin name."

53—I

"What's Radium?"

88—RA

"RA."

KIRA.

"Kira," Olivia breathed, her heart starting to race. "That's why none of the tethers were giving me anything."

"Guys," Lydia spoke up, giving them a horrified look. "Scott went to Kira's house for dinner."

-

When they got to Kira's house, Scott was knocked out, laying on the street next to his bike. Kira was no where to be found and when Stiles was finally able to wake Scott, he confirmed their suspicions.

"Barrow, he took Kira!" he exclaimed breathlessly as Stiles and Lydia helped him to his feet.

"We know. He was after her the whole time," Stiles patted him on the back. He glanced at Olivia, who had been talking to Isaac on the phone to see if he and Allison found anything in the bestiary. "What'd he say?"

"They didn't find anything," she reported, ending the call. "Just some stuff about flies and the dead. Nothing else."

"Well, we have to think of something," Scott said nervously. "He's going to kill her."

"I knew he was there," Lydia's voice deepened when it shook from the anxiety she was feeling. "How did I know that?"

"You heard the flies," Stiles said. "What do you hear now?"

Lydia was silent for a moment, listening, before she shook her head. "Nothing," she scoffed, disappointed in herself. "I feel like I can do this. But I don't know what to do. It's like it's on the tip of my tongue, and I don't know how to trigger it. I just—I sweat to God, it literally makes me want to scream."

Screaming, the most known way of communication from a banshee. "Then scream, Lydia," Olivia urged her. "Scream."

The scream that burst from Lydia's lips was the loudest any of them had been yet. While Olivia covered her ears and flinched back, she mused that it might have been because it was the first time Lydia was actually cooperating with her abilities. Despite the pain that being a banshee could bring her cousin, she was proud of Lydia for using her powers for good.

Lydia's tether flared and shook, but it held strong. Lydia was strong.

A full minute later, Lydia's screamed died down. The redhead didn't move, still turned away from Olivia, Stiles, and Scott. A noise caught her attention, the buzzing noise. She followed it, looking up at the streetlight hanging above her. She quickly turned around, causing Stiles to flinch.

"It's not flies," she told them. "it's electricity."

As Scott looked up at the light, Stiles twisted his lips. "Wait a second," he thought aloud. "Barrow was an electrical engineer. He worked at a power substation."

"What substation?"

He squinted, trying to remember the information from some of the papers he pinned to the crime board in Olivia's room. "The one by the Iron Works."

-

Scott drove ahead of them on his bike, arriving at the power substation in the Iron works couple minutes before Olivia pulled up with Stiles and Lydia in her car. Scott had already run into the building and Stiles was jumping out of his seat the second Olivia shifted into park.

"Okay, wait here," he told Olivia and Lydia. "Just wait for the cops to come."

"Stiles, I'm coming with you—"

Stiles cut Olivia off before she could protest more. "I have only one bat, Livvy. Please, please just wait."

Olivia felt her heart starting to ache from the panic pumping through her. "Stiles, if you die, I'll kill you."

Stiles only winked at her before running off into the building. Lydia climbed into the passenger seat while they waited, tightly squeezing her hand. It wasn't long before Scott's red tether was pulsing painfully and seconds later, Stiles' and Isaac's started up, too.

Scott, Stiles, Isaac...Scott, Scott, Scott...Isaac, Isaac, Isaac...Stiles, Stiles, Stiles...

There was an explosion; bright lights came from the inside of the substation and then everything went black.

"SCOTT? ISAAC? STILES?"