A/N: Hello my wonderful followers, readers, Supernatural and Shadowhunters/mortal instruments fans! I want to thank everyone who's been reading this far! I hope you are enjoying it as much as I'm enjoying writing it. This one is really challenging but I'm loving it! Just so you know, I had to do it. There's a really good reason for it, I promise! Please enjoy!

Carry on wayward supernatural fans, and happy patrol shadowhunters.

Andra rolled her eyes, because, you know, staying awake with a concussion was just a brilliant plan. Her vision decided to do the backstroke in a pool of dizziness, while the delightful sound of dripping water in the oh-so-charming abandoned warehouse serenaded her. Oh, and let's not forget the award-winning performance by Dean in the role of "guy who talks and talks but doesn't really say anything." And just like that, Andra bid farewell to consciousness, taking a dramatic dive into the welcoming arms of darkness. Classic Andra, always choosing the most glamorous exits.

...

Flashback.

Andra stood at the door of the New York Institute, feeling about as comfortable as a fish out of water. Her mother had just dropped her off, reminding her to keep her colored eye contacts in, and then promptly left her there, trembling like a leaf in the wind. With no clue what to do, she resorted to pounding on the door until it creaked open. A man, who looked like he had just woken up from a century-long nap, peered down at her with a perplexed expression. After a moment of apparent confusion, he motioned for her to come inside and introduced himself as Robert Lightwood. Well, wasn't that just the cherry on top of her bewildering day?

Andra's head was spinning so much that she couldn't even muster the courage to ask a single question. What had she done to deserve this exile? Was her dad so furious with her that he had banished her to this place? The whole situation felt like a bad dream, and she couldn't seem to wake up from it.

Andra watched as two boys, who looked to be around sixteen, approached her. The one with dark hair folded his arms, casting a scrutinizing glance at Robert, while the blonde boy flashed a grin, introducing himself as Jace Wayland. Jace? Wayland? She had never heard of him. Her heart pounded in her chest as she struggled to make sense of the situation. What had she done to deserve this? Her dad must have been really upset with her to send her here. Tears welled up in her eyes as she tried to hold back the overwhelming emotions.

Andra felt a wave of uncertainty wash over her as Jace's grin disappeared. "Whoa, hey now," he said, his tone shifting. "I usually don't get that kind of response."

The other boy, who seemed to have a perpetual air of exasperation, rolled his eyes. "So she's the one you were telling us about, dad?"

"Yes, Alec. Andromeda," Robert replied with a nod. "Her mother is a mundane with the sight. Her father, a shadowhunter from the London institute, believes it's best for her to be with us. I agree."

Andra couldn't help but feel like she was invisible, like she might as well not even be here. Just when she thought she couldn't feel more out of place, a girl, appearing a little younger than the two boys, bounced up. "I'm Izzy! I'm so happy to have a girl around," Izzy exclaimed, taking Andra's hands. "I think we're going to be good friends!"

Andra tried to muster a smile, but it was difficult. She was feeling so confused and scared that the idea of making friends seemed like an impossible task.

...

Two weeks later, Andra gazed at the first rune on the back of her left hand. Jace and Izzy were nice enough, but she couldn't shake the feeling that she often irritated Alec with her silver tongue and quick wit. She sighed, resting her forehead against the cool windowpane when a sudden fire message appeared before her. It was from her dad, explaining why he had sent her to the New York Institute. He had a special job for her, a task that only she could accomplish. A surge of relief washed over her as she realized that he hadn't abandoned her after all. With a grin, she immediately set about composing a reply.

Andra was consumed with curiosity about what her father's special task could possibly be. Anxiously, she waited for two long days until the next fire message finally arrived. As she read the message, a frown creased her brow. Her dad wanted her to keep a special eye on Jace, to make friends with him. She pondered the message for a moment, feeling a mix of confusion and determination. She could do that, she decided, with a small nod of resolve.

...

Present day.

Andra blinked her eyes open and was immediately greeted by a pounding headache. The cold, wet stickiness on her neck was nothing short of infuriating. As she instinctively tried to lift her hand to wipe it away, she was abruptly reminded that her hands were zip-tied to a chair. Oh, right. She and Dean were in an abandoned warehouse, kidnapped by vampires. What fun.

Andra found herself lost in thoughts of the first time she had met Jace, Alec, and Izzy. If only she had known then what she knew now, she would have immediately shown that fire message to Jace. Perhaps they could have acted more quickly. Maybe, just maybe, everything that had transpired could have been avoided if only she had been more vigilant. She sighed, shifting her head from side to side in an attempt to ease the soreness in her neck. "Damn it," she muttered to herself. How could she have been so careless as to let herself be jumped by a vampire? She chided herself, knowing she should have been more cautious.

"Hey Cupcake," Dean said, his voice sounding oddly distant. He sounded weak almost. Tired. "You with me?"

"Yeah, sorry, Cowboy. Kind of faded into the past a bit." She quipped, lifting her head her eyes falling on him.

Dean's face was pale, the IV in his arm still set in place as it slowly dripped blood into the bag. "Good," He gave half smile. "I was just thinking that I should have called mom about the whole reality merge."

"Your mom? I thought she was -"

"Dead? Yeah. It's a very long story."

She swallowed, licking her dry lips. "We are gonna get out of here. We have people coming for us. My parabatai, my brothers. Magnus. They will stop at nothing. Just like your brother."

Dean nodded, somehow looking weaker by the passing moments. They didn't have much time. Biting her bottom lip she started to wiggle her hands. There has to be a way to break free. Wait. These are wooden chairs. Taking in a deep breath she manage to lift herself in a crouching position, Dean watching her with half, opened eyes.

Glancing around, she spotted a metal wall. Turning around, she mentally apologized to Addy, before running backwards as best as she could at full speed, smashing the wooden chair legs into the metal wall. Pain shot through her body as the wooden chair shattered, and she fell to the side, a little dazed for a moment or two.

But the only thing that broke was the legs of the chair. Damn it!

"Hey, Cupcake. There's a knife in my front pocket." Dean said.

She forced herself up and walked over to him, leaning over him and almost losing her balance. She unintentionally pressed her chest into his face as she looked for the knife.

"If you make a joke, I swear I will leave you here." She warned not liking his chuckle.

She finally found the knife, twisting her body around he opened it with his fingers. She cut the zip ties around his wrist first, then gave him the knife. After he cut the zip ties, she's straightened, then pulled out her stele, drawing healing, endurance, stamina, and speed as he ripped out the IV.

He rose and immediately almost fell. She wrapped her arms around him, keeping him upright. She gritted her teeth. She should have drawn strength. Moving as quietly and quick as they could, they were almost to the exit when two vampires stepped in front of them. She automatically reached at her sides for her daggers, only to discover that they were gone. Oh, now she's pissed.

Thinking quickly she grabbed some chains that was randomly on the floor and bashed them over the vampires head, Dean managing to take down the other one.

It happened fast, this sort of thing did sometimes. It usually happened in a blink of an eye, and no one can foresee it. One second, she was helping him keep his balance, that's all it took. She was being pushed out of the way, as a vampire stabbed Dean in the torso. The vampire went flying somewhere in the dark, Dean falling to his knees, Andra collapsing beside him cradling his head so it wouldn't hit on the cold stone floor. Voices and movement around her, someone shouting arrows flying, Seraph blades flashing in the darkness. Magnus's beautiful cat eyes, crouching down in front of her, his hands pressed to Dean's torso, blood flowing through Magnus's fingers staining his rings with red.