After the graveyard, Jace and Clary went to go grab a ride to the Hotel DuMort, leaving Isaac alone. Jace told him that it was vampire territory, leading the Lahey boy to forfeit from going because it would just create an unnecessary battle over nothing. Instead, he opted out to walk there. But the thing was, he couldn't just around the place, it would attract too much attention, so Isaac stood in the shadows as he watched the building.

Every now and then he saw a vampire walk out to see if anyone was there, but he made sure to cover his scent with something that another pack had given him before he left Beacon Hills. When he went on missions to learn about the alpha pack, he learned of another pack of werewolves and helped protect them from one of the alphas in the threatening pack. In return, their leader gave Isaac a sort of mist that covered up his stench. So far, he had only needed to use it three times.

The first was in France. Chris had enrolled him in high school there because "education is important, Isaac" and he wanted to make sure that no other werewolves were there before revealing himself. Using the spray, he covered himself before he found out that none of the werewolves they were hunting were there.

Then, he had to use the concoction again in Brooklyn when Luke was introducing him to the pack. Luke wasn't sure how they would respond to the young werewolf, so Isaac took matters into his own hands and made sure to make them think he was a human who simply knew of the supernatural world.

And then there was now, when Isaac was stalking a building full of murderous vampires. He has waiting for a text from one of the group members, Jace said that someone would notify them when they were ready to move.

His prayers were answered when he got a text from Izzy, the girl who constantly flirted with him yet didn't care about him. Basement, was all that the text said, but it was enough for Isaac and anyone else she texted to know where to be.

When he was walking into the basement of the building, he met up with Alec who had also just appeared there. Alec nodded, signaling that he knew of Isaac's presence.

"Izzy!" Alec yelled slightly, "I got your text. Where are we exactly?" Both of the approaching boys looked around at the setting. It was dark, gloomy, and a little depressing. Everything was steel and cold, nothing looked exactly welcoming.

"It's an old meatpacker's service entrance," Isabelle told them as they began walking.

"Looks a little like a sex chamber," commented Isaac as he continued to look at all steel features of the place.

Isabelle smirked, "Could be if you want to come back later."

The Lahey boy rolled his eyes and scoffed, "Really? At least try harder, make them a little more discreet. I mean, your brother is right there!"

"Will you guys stop?" Alec broke them apart, "Izzy, can you tell us why we're here?"

"Gladly, if we go back there, we come up into the basement of the Hotel DuMort." Isabelle told them, "Perfect, right? We distract the vamps, Clary and Jace have time to find Simon."

"Okay," was all that Alec said, with a hint of unimpressment, Isaac noted.

"'Okay'?" Isabelle repeated, angered the tiniest bit before his lack of enthusiasm, "It was hard work interrogating Meliorn to get this intel."

Isaac rolled his eyes discretely, "Yes, because sleeping with someone is so hard."

Both of the Lightwood siblings rolled their eyes at Isaac, his comment not exactly benefitting them in the slightest. Isabelle usually loved his little, sarcastic comments, but not when they were directed to her. Then, it just hurt a little.

"Great job, Izzy." Alec said in the same, bored voice. Isaac noticed that he always had it, and he created this web of why. The Lahey boy came up with many theories, but none of them seemed to stick. His favorite was that his lover was killed because she broke the rules and so the rules broke her. It made him laugh sometimes (on the inside, of course), this was one of those times.

"You have faerie dust on your dress," Alec commented, "And I hate being the distraction." He complained as well, making Isaac mutter an 'oh great'.

"You know, I didn't peg you as a complainer, Alec," Isaac told him, causing the Lightwood boy to glare at him.

"I don't mind being the distraction," Isabelle smiled, and Isaac maybe, kind of wanted to smile as well. He couldn't help it, she had one of those smiles. "You know, you'd be a lot happier if you weren't so freaking repressed."

Alec response was a roll of the eyes and walking faster to get ahead of them. Isabelle called his name a few times before giving up and moving towards Isaac, closing the gap between them slightly. Sometimes, the girl reminded Isaac of his old love, Allison. She was confident, knew what she wanted (but then again she didn't – Allison was very confusing), and knew how to take charge.

So far, Isabelle met everything on the list of 'How to be Allison Argent' except not being an archer, and she wasn't human. Along with the fact that she wasn't Allison and the Argent was dead.

Isabelle asked him questions like what his favorite color was, how he met the Frays', and why he agreed to still help them. It wasn't until she asked why he took the bite did he come to a complete halt.

Why? He had asked himself that question so many times, and never once could he give himself an answer that excused everything that had happened. Isaac took the bite because he wanted to feel powerful. He wanted to take control of his life, wanted to feel like he amounted to something. Isaac wanted to be able to stand up to his father.

Isaac knew that everyone wanted power, but he wanted it so badly he let go of his normal life for it. He wanted it so badly he gave up living a safe life. Since he took the bite, he landed himself in jail for a night and had numerously almost killed someone. He got to see death for the first time and got to look in the mirror and see one thing; a monster.

But good things also came out of the bite. Isaac fell in love for the first time, gained friends and homes that were actually worth calling home. He felt worthy and needed, not just some wasted space. Isaac felt human. But in reality, he was nothing close to a human at all. If he had not taken the bite, he would have never known he was adopted. Isaac would have never stepped foot in Brooklyn, he would never have met the Fray family and he wouldn't be here. He wouldn't be standing next to a beautiful woman who was willing to help someone she didn't know. So maybe the pros did outweigh the cons.

"What every human wants," Isaac finally responded, pulling himself out of his daze, "I wanted to feel powerful."

Isabelle nodded, taking that in, before deciding on her next question, "Do you regret it?"

Yes, Isaac was about to say. Because sometimes, he did regret it. He regretted it when they all looked at him when Simon was kidnapped and all they saw was a monster. Isaac regretted it when he realized he was strong enough to kill someone, and wanted to.

"Sometimes," he said, only adding more once he saw the confused look on the girl's face. "I like what it's done for me. I mean, I realized I was adopted and met Clary, that's nice. Made friends, created relationships, and that's all great. But, you know, sometimes I do regret it. When the lights come off and I'm just left with my thoughts. That's when I regret it."

The two continued to walk, Isaac occasionally stealing a glance at Isabelle because oh, she actually looks really good in that dress. He saw out of the corner of his eye that she was doing the same, but sadly he didn't know what she was thinking.

It was further before Isabelle made an attempt to talk to Alec, actually it was when they were almost at the door. "You're really not gonna talk to me, are you?"

"That's because you have no idea what you're talking about," Alec responded with slight irritation.

"But I do. You're hiding from yourself, not me," she edged on, leaving Isaac to feel so utterly confused at the conversation topic. Although he talked so much to Isabelle, he barely had any conversations with the male Lightwood. It's not like Isaac was a little intimidated, nope...not at all. "You have feelings, whether you like 'em or not, Alec."

"This is not the time or the place, Izzy." Alec gritted out. Isaac's eyes were still flickering from one to the other, neither giving any indication of what they were talking about.

"Wait," Isaac finally spoke, "I'm confused. What's happening."

"Little Alec here is gay, but he doesn't want to admit it," Isabelle said in a sing-song voice, smirking as she saw the visible flinch on Alec's face.

Alec turned is neck to look at Isabelle, "I'm not gay!"

"Really?" Isaac gave him a look of confusion, which matched the glowing eyes of anger Alec threw him, "If you're that worked up on it, it seems that you are."

Alec rolled his eyes (which seemed to be happening a lot near Isaac) and scoffed (again), "What would you know?"

"Yes, what would I know about keeping something about yourself and being ashamed of it?" Isaac innocently questioned.

Isabelle gave him a sympathetic glance before turning back to her brother, about to say something before he said something himself, "This is not the time or the place, Izzy."

And again, she returned to her old, comedic self, "I don't know. Looks pretty smooth so far." Then, the silence returned and they continued to look behind their backs and find a way into the hotel.

It worked for a little while. They walked, Isaac staying in the back to make sure nothing came out from behind them (and no, it wasn't an excuse to check Isabelle out...nope, not at all) and because he didn't want to get in between all of that tension between the two siblings. He already had to smell their emotions, he didn't need to feel them as well.

Time passed, and the three of them found a door, "This must be the way."

With the twist of the knob and a pull towards them, a group of vampires appeared and started to hiss at them. Like a reflex, the Lightwood siblings closed the door and slammed themselves on it. "Isaac!" Alec yelled before the Lahey boy applied his extra werewolf strength to the cause.

"Well, not that smooth," Isabelle commented, looking at their surroundings instead of the two boys next to her. "Any day now," she egged on at her brother, who was going through his bag to find his stele.

"Yeah, if you hold the door still, it might be a lot easier," he snapped back at the pair.

"There's only one supernatural being here," Isaac pointed out, "and they have like, twelve! Who do you think would be winning right now?"

Alec tried to rune the door, but it didn't work, "It's not taking it." The Lightwood boy pressed himself against the door again and Isabelle left with her blade in hand.

Chopping up a metal rod, Isaac didn't have a better name for what she had done, Isabelle placed it through the handle of the door to keep the vampires out of the room they were in.

"Whoever said, 'the pen is mightier than the sword,' was an idiot," she smiled and laughed, the kind of one on a summer day at the pool when you're splashing water on one another and having a good time. Isaac decided that he liked that laugh.

"When you're right, you're right," Alec added, his own 'great job'. Isaac simply gave her a nod of the head and a smile, which she obviously knew what it meant.

Isabelle continued you to smile, it reminded Isaac of the alpha twins a little, "Do you think they know where we are?"

"That's the idea, right?" Alec dryly asked. "How long do you think we have to district them for?"

Isabelle's lips turned downward slightly as she thought, "Ten more minutes."

"Ten minutes? Are you kidding?" Alec scoffed, "We're liquid lunch in five."

"So let's district them," Isabelle determinedly stated, her fists raised and ready for a fight.

"So let's distract them," Alec repeated, his bow ready with an arrow. Isaac said nothing, only let his claws grow in his hands and his face to transfigure from the normal clean-shaven look into that of a hairy beast.

Growing was heard from the other side and a pale hand finally reached the rod in which trapped them inside their building. With a smash, it fell to the ground and the door creaked right open, exposing many smiling vampires.

Within an instant, they came running at the three who stood there defiantly. A group of three ran up to Isaac, who slashed then with his claws and bit them with his fangs. He felt nothing as he did this, it was for justice. Do it for Simon, he told himself, this is for Simon. They were nothing but undead flesh who kidnapped Clary's best friend.

And then the memories poured into Isaac like those of a tsunami. All those times with Stiles, telling him how much he hated him and then how much he appreciated him. Isaac's head filled with the memory of him and Scott making a pack to take watch of Mama McCall while she slept to protect her from the current beast in Beacon Hills. And suddenly, it wasn't for Simon, or Clary, or anyone in Brooklyn.

Do it for your pack.

That's what flooded into his mind, affecting his every move and the anger that went through his veins and the claws that went into the vampires' chest.

Do it for Derek, who gave you a new life. Do it for Erica, who showed you friendship. Do it for Scott, who showed you what proper leadership felt like. Do it for Allison, who taught you the most important thing of all; how to love.

Nothing else in the world mattered to Isaac. It felt like it was just him, fighting the demons that left him tired the day before, and the soothing voice of his first love. With Allison by his side, he could do anything. He would do anything, because he didn't want to lose someone else like he did Allison.

And once Isaac's trance finished, he realized all the vampires that were charging at them were disintegrated and they were alone. With a look to the Lightwood siblings, the three of them went inside.

They chased after the room where they heard Clary screaming, Isaac being the fastest because it was the little girl he vowed to protect. Once there, he saw Clary pinned to the wall by a vampire.

"Clary!" he called, catching the attention of not only here but the other vampires in the room. The vampire brought her off the wall and showed her to Isaac like a prize he had won.

Alec and Isabelle entered the room, the male Lightwood with his bow raised and ready to shot. But the vampire still held Clary by the neck and held her close, any shot would be risky. Alec had another plan though, he aimed his arrow to the wall behind them and let it go. Clary flung herself out of the way and the vampire got burned in the daylight.

Immediately, Isaac ran to Clary, holding her close and tightly, but not too tight, like she was made of glass. It was a quick hug before Clary returned to her blade and walked toward another vampire, prepared to fight.

The fight was over soon, Clary the victor as he too was burned by the blade and turned into dust. Once the room was cleared of those few vampires, and Clary and Jace shared a creepy stare into the eyes, Clary muttered, "I killed him."

Jace's head leaned to the side quickly, "He was already dead."

"Plus," Isabelle walked forward, "he wanted to kill you. Remember that."

"And, if none of the above helped, remember that you did it to protect everyone else here. You did it to save Simon," Isaac smiled sincerely, but with a hint of mischief as well, because Isaac can't be that sentimental.

Isabelle smiled at him before excitedly saying, "She did great, right?"

"Yeah, you did," Jace's face was serious with the underline of something else, "You should be proud."

"Thanks, but...it's not about me. Let's go find Simon," Clary looked determined, following the advice that Isaac had given her.

The group, now together again, started to follow Clary as she led them to wherever she thought they had Simon. And Isaac began to wonder when he signed up for doing that much walking, because he was not made to walk that much in one day. No, he left all that exercise in Beacon Hills where running was mandatory if you wanted to stay alive.

But nonetheless, they ended up in a room with a large, red, Victorian style couch and yet another vampire who held Simon with a knife to his throat.

"Simon!" Clary cried.

"Clary," Jace warned her, knowing that the male vampire from the night before would not give him up so easily.

"Listen to him, Clary Fairchild," the vampire greeted in a mocking tone, "Put it away. I've had more than enough of your friend for one day. I'd love to cut his throat. Don't give me a reason," he yelled the next part when no one did what he asked, "Put it away!"

All of them put their blades away and Isaac retracted his claws. Clary stepped forward, "Simon, Simon, are you all right?"

"I wouldn't say all right..." Simon began, his tone laced with fear, but the vampire cut him off, "Stop talking!"

"Now," he turned back to the group, a ghost of a smile on his face, "if you would all just follow me."

Everyone complied, following him down the corridors and wherever he led them. Every now and again he would yell at them to move until they reached the top of the building; their escape.

"Come on, let's go! Up here now!" they went deeper into the tunnel, "That's right, get down there now! Get down there or I'll kill him right now!"

Clary bargained with the vampire, "Look, we're not gonna hurt you. We just want Simon."

"I'm glad you do. We don't!" his voice was deep and demanding, making sure the Shadowhunters and Isaac did exactly what he said, "We wanted you."

"Well, here I am," Clary said to him.

"Stop! I said 'wanted'. Not my idea," he told them. They were almost there now, just the climb of a latter and all of them would be free, "Now, get out! Go!"

"Not without Simon!" Clary screamed at him defiantly. If you could give her own thing, it was her loyalty to those she was close with. Clary would do anything for the people she loved.

"Shut up! Open that door right now or I'll kill him right here." The vampire's threats, at least to Isaac, were becoming boring and repetitive now. Didn't he have anything else to say? Apparently not, it seemed.

"Listen to him!" Jace ordered Clary, but it didn't seem to work.

"But Simon will die if..." Clary cut short as she saw the vampire hide from the sunlight, afraid of its sensation on his skin.

"Clary, go!" Simon, still with the knife to his throat, told his best friend. Isaac had to admit, sacrificing himself to save everyone else was a great thing that Simon had done, but he really wished he hadn't.

There was more commotion between them before the vampire said, "Go! Take him! Go!"

"I don't know how to thank you," Simon breathed, looking at the vampire who still hide behind the metal pole in the tunnel area.

"Don't thank me." The vampire coldly stated, "You mean nothing. This is about Valentine and the chaos he can bring."

They were so close, the sunlight there and the rooftop and they were so close before the vampire decided to bring them back again with the call of the stupid, blonde Shadowhunter.

"Jace Wayland!" the vampire panted, catching the attention of the Shadowhunter, "Remember who your friends are."

And then the door closed and everyone made it safely to the rooftop. Isaac let out a breath he didn't know he was holding and just stared at the sky, taking in the warmth that bared down on his skin.

Simon, with his lip trembling from the events that had just happened, asked, "Shouldn't we get the hell out of here?"

"Why, Simon?" Jace asked him dumbly.

"They're right downstairs," he breathed out, still taking in everything that had just happened to him. And man, was it a mouthful.

"Simon, dear, they'll just turn in the dust the moment they open the door," Isaac laughed at him, "So let them come, and let them burn!"

After that, Isaac tuned everyone out, because god, it just felt good to be safe. It felt good to see Clary smiling and everyone standing around with their lives looking alive and ready.

And all Isaac wanted to do was turn around and go home. He wanted to see Jocelyn rushing to greet him when he returned home with a welcoming smile on her face and the smell of dinner to make its way to his nose. Isaac wanted to see a young, innocent Clary rambling on about her day and the adventures her and Simon went on together and how she wished she could get into the art school of her dreams.

But then reality came crashing, and Isaac realized that Jocelyn wasn't here anymore and he couldn't go home. And Isaac wanted to run away, but it seemed like Alec beat him to it.