DISCLAIMER ~ I don't own anything Infernal Devices or Mortal Instruments-wise. That is all down to the incredibleness of Cassandra Clare – who is, it has to be said, a pretty damn good writer xD

NOTES ~ Okay so i know that i should finish the other stories i got going at the moment before starting another... but i just so couldn't resist. I mean come on ... how brilliant would it be for IF and MI to come together? And so ... this is what you get when you add together an eagerness to do a crossover + the Christmas holidays + muse inspiring music..pleeease R&R ... it makes me haaappy xD

CHAPTER ONE ~

Clary twirled the stele between her fingertips, gaze looking imploringly at the others in front of her. They stared back with expressions ranging from incredibility, to annoyance, but it didn't stop Clary from pressing her idea upon them again.

"But don't you think it'd be intriguing?" She asked, tone hushed with excitement and wonder. Isabelle flipped her shining black hair over her shoulders and glanced at Clary as if she'd contracted a horrifying disease.

"Are you crazy?" She answered Clary's question with another, and Clary sighed, rolling her vivid green eyes, gaze turning to flicker back and forth between Alec and Jace now instead. Jace's golden eyes caught hers for a second, something stirring within the depths, before he voiced his own thoughts.

"Sure i would. I'm up for it – it's been sure as hell boring around here anyway." He grinned, and then glanced to Izzy as his adopted sister frowned at him.

"Oh sure, side with your girlfriend..." She muttered, and shook her head, causing her hair to fall back over her shoulder.

"I will." Jace smirked at her, and then jumped lithely from his perch on the counter to thump himself down on the stool beside Clary, slinging an arm carelessly around her and grinning at Izzy the entire time. Clary rolled her eyes, tempted to shrug off his arm, but instead finding herself leaning against his solid, comforting frame with a small sigh.

"But seriously guys. I think i can do it." She frowned down at the stele between her hands. Isabelle looked sceptical, but Alec had a different emotion upon his face – patience perhaps? It was hard to tell.

"It isn't a question as to whether you can do it or not-" Alec began to say, sounded tired, but Izzy cut across him impatiently.

"Really? I was under the impression that that is exactly why we don't want to try it. God, Clary, for all we know you could send us halfway across the world...or out of this world entirely." Clary frowned and opened her mouth to reassure her that she knew what she was doing – even if she'd never done it before, but Jace beat her to it.

"I thought that was the whole point?" He smirked and Clary shook her head, ignoring him and focusing on the Lightwood siblings sitting across the breakfast table counter from her and Jace.

"Look, you might not think i can do it, or that it's not a good idea...but i saw the rune in my dream, and i really think it was a message. What if we're supposed to try?" She leant forward slightly, trying hard to persuade them both. She could do it, she knew she could.

"But what if it was just that – a dream. Clary have you ever heard of what happens to those who's Portal's go wrong? They're terrible, gruesome stories- and all they tried to do was go a few miles west or something, not travel back in time!" Isabelle's expression was despairing, as if she knew she was trying to persuade a lost cause, and sure enough, Clary shook her head and leant back slightly, a half smile upon her face.

"It won't go wrong. And i'm trying it even if you're too chicken." She shrugged and stood up, Jace's arm sliding from around her shoulders. She took her stage centre of the lounge, leaving the other's in the kitchen and gripping her stele more firmly. She heard the others filing out behind her, but if they spoke she never heard the words. Bringing the recent image of the new rune to the front of her mind, Clary closed her eyes, took a slow, deep breath, and began to draw. It was complicated – more so than any she'd tried before. She drew the stele swiftly and carefully through the air with a skilled and practised hand, swirling the ink black line, the others watching as it twirled, looped and circled back in on itself, changing directions, spiralling back out and then curling back in until it was a weaving of impossibly dark and confusing lines.

And then in was complete, and Clary changed focus to draw the portal itself. She'd have originally thought to draw the portal first, and the specific rune from that, but thinking about doing it that way felt wrong. So as the portal was drawn to include the rune, there was an essence that this was the right way to do it. And soon, she was stepping back and opening her eyes to the bright light, inviting her to take a step forward to the past.

"Clary," She paused, glancing down to find a warm, restraining hand on her arm. A glance behind her showed Jace glancing at her in worry, shaking his head. "Don't. Izzy's right." Clary frowned.

"Since when? You said you'd come..." She felt a flash of hurt, even if deep down she'd known he had been joking a few minutes ago – not having believed she'd try perhaps? Sure, to them this was possibly stupid and dangerous, but to her it didn't feel that way at all.

"I've heard the horror stories too. I don't want them to happen to you." He took a step closer to her, expression as imploring as hers had been earlier, fierce eyes soft. She sighed, lips parting as his thumb reached up and brushed them lightly. They forgot all about Isabelle and Alec for a second, Jace bringing his face close to hers, lips inches from replacing his thumb. Their eyes locked, and just when Clary was about to give in and press her lips hungrily to his, he whispered to her.

"Don't go." She took a step back and shook her head, wishing they'd trust her for once – trust that she could do this, despite how impossible it seemed.

"No." She whispered back, eyes casting to the portal. And before he could stop her, she took her arm from his grip and just...jumped.

Take me away from here...far away...right back into the past to places i never visited...to people who i'll never have known... to a time i'd never been born. Show me the past.

She felt a jerk as she freefalled into the brilliance, and squinted back to see Jace holding on tight to her wrist. She frowned, trying to find her lips to tell him 'no'. His expression looked stuck between anxiety and anger.

And then they landed. It was not a graceful landing – and certainly not a painfree one either. Both Clary and Jace hit the solid ground hard, rolling over each over several times before stopping and laying still for a second, panting hard. It took several seconds to realise that Clary was tangled with more than one other set of limbs, and as she extracted her arms and legs from the pile and drew herself up to sit, she caught Isabelle and Alec copying her. Jace stood up first, practically springing to his feet and adopting a defensive front, before noting that the dark street was empty but for them, and that no dangers rushed out to meet and greet. Only then did he relax and allow the anger to take place on his golden features.

"Clary what the hell were you playing at!" He half shouted, eyes raking her torso to make sure she was okay before helping her up. But Clary had no time to feel bad about what she'd dragged the others to – her gaze had flickered to their surroundings, and two figures far away in old styled clothes.

"Forget that..." She waved off Jace's arguments as she heard him continue yelling about how he 'could've lost her' and 'how could she be so stupid' with a vague voice. "Look!" She instructed them all, throwing her arms out in wonder, face lit up. "I did it!" And then the others did look. And boy was it a picture to see their faces.

"Oh shit..." Alec breathed out, eyes impossibly hard. Isabelle was speechless for once, and only Jace was the one not in the least smiling. He was frowning, eyes darting to the distant figures.

"The only problem is...where and when."