A/N: Here's chapter 3! Enjoy! :-)

Clary POV

Today had been eventful, which was quite odd. I was just sitting in the coffee shop with Jace, Izzy and Max when a dust demon just walked in. It was quite a casual entry but it seemed to spark a violent energy within Jace and Izzy. They both jumped up from their seats and began to corner the demon behind one of the counters within the coffee shop. After a couple of minutes, Jace had chased the demon out of the door and had done the business, for he walked back in shortly after, dusting his hands on his black leather jacket.

"I hate not being able to fight with them," Max moaned, I felt sorry for him I couldn't bear to think what it felt like watching someone else fight a battle that you desperately wanted to be a part of. "Someday Max, that will be you, you just need to wait," I said, patting him on the shoulder. He dropped his shoulders so I reminded him, "Just think of it like this: you're just watching them for now, gaining experience so you can be better than both of them later on." I winked at him and he grinned just as Jace sat down with Izzy, opposite Max and me, "I tell you, Alec is going to regret not killing that demon today when he was supposed to." I looked confused, it sounded as if they knew that the demon was going to be here in New York.

"Is that why Alec wasn't here with us today, so he could kill the demon?" I asked, Jace nodded, "Yes, he was at the graduation of Forks High School and he was supposed to kill it and spare us of the danger that we could've been in, had it still been alive."

"But how did you know where it was going to be?"

Jace glanced at Izzy, so she interrupted, "We got told by Magnus that he had heard of a demon group that were individually planning on killing off the Werewolves and Vampires of Forks starting off at the High School. So we knew it was our duties to... eviscerate them." I was again reminded of this lethal side of Izzy, sometimes I would forget how many times she had killed. "We knew that it would travel from Forks to here in New York and we knew it was us who it wanted."

"Oh," Was all I could say.

"Well, I suppose it just proves that I am a much better shadowhunter than Alec and won't he know about it when we get home," Jace gloated. In silence we finished our coffees and waited to pay the bill.

"Clary, I think it would be best if you don't come back with us, I think you should go and see Simon," Izzy said, I could tell that they were pushing me away, they obviously didn't want me to be there when they were questioning Alec about the demon. I sighed, "Sure, I'll see you all later then!"

Max waved goodbye to me and ran out of the coffee shop, probably running back to tell Alec what Jace and Izzy had been saying. "Clary, will I see you tonight?" Jace asked, looking awkwardly at Izzy. Izzy took the hint, waved goodbye to me and slowly walked away. "I'm really sorry that we – I can't spend the whole day with you. If the demon had been killed sooner, maybe things would have been different. Are we both okay?"

I smiled sweetly, "Of course, ring me later. I suppose I better check up on Simon and see if he's alright." Jace raised the corner of his lip in a smouldering smile and gave me a warm hug goodbye. He then walked down the road, back to the Institute. I pulled my mobile out of my pocket and punched in Simon's number, he picked up after the first two rings, "Hey Si, you wanna come round mine for a bit?"

Me and Simon were lounging on my Mom's white sofa and chatting like we used to in old times, he was very sweet to me but I never saw him as more than my best friend and I knew that hurt him. We'd been talking for hours, when someone was frantically pounding at my door, I looked at Simon and shrugged my shoulders – I had no idea who it was. I peered through the peep hole in the door; it was Alec. And Jace. I opened the door slowly and looked at the curious faces.

"Hello?" I said, widening the door and they invited themselves in.

"Hey Clary, I have to ask you something," Alec said, Jace stood behind him all serious looking.

"Sure, but can we sit down, my legs ache," my legs didn't actually ache, I just felt nervous at what they were going to say to me as I didn't think it was going to be good. I placed myself next to Simon, who sat forward in his chair, almost protecting me, I grimaced. Jace and Alec positioned themselves on the other white leather sofa opposite us.

"Clary, you know how at first you didn't realise you were part nephilim," Alec asked, I nodded along trying to guess what they were getting at. "Well, we're going to need your help with something. We can't explain fully but we need your help, desperately." Alec and Jace gave me a pleading look, almost like puppies, I repressed the urge to laugh. "It depends what I have to do. If it involves me getting hurt or risking my life, I'm not going to do it!" I mumbled.

"Come on Clary, do it for us, do it for me," Jace sidled up to me intimately and snaked his arm around my shoulders, Simon coughed awkwardly and Jace abruptly moved his arm away from my body. "Fine," I said, "I'll do it, but if I get hurt, I'm going to blame you Jace." I looked at him disapprovingly and shook my head. "What do I have to do?"

"Well, do you know of the teenage girl Renesmee, who's part human, part vampire who lives in Forks?" Jace asked, I distinctly remembered meeting her at the Pandemonium Club a couple of months ago. "Is she the girl with the deep bronze hair, the one who is like a mate to that werewolf Jacob Black?" I questioned.

"Yes," Alec said, "that's exactly who we are on about. I was telling Jace my plan on the way here, so he fully agrees that this is okay." I gave him a half smile and he continued, "We're going to need you to question Renesmee, we need to find out some very important information about her."

"Okay," I sat forward in my chair and decided to make a proposition, "Explain to me this whole situation because otherwise I can't help. Does this have something to do with the demon that was here earlier today?" Jace looked over at Simon and they exchanged a glance that I couldn't read.

"Yes," Alec gave in, "So here it goes, listen carefully, I'm only going to explain this once." I sat back in my chair and got comfortable and gave him thumbs up to show that I was listening. "A dust demon was supposed to be in Forks today and it was planning to kill Jacob Black and the Cullen vampires, so I was meant to be there and kill it before it made any damage. However, I tried to warn the vampires and the werewolf of the demon's presence but they couldn't see me. The only person who could see me was Renesmee. She could only see me though not the demon, which was very dangerous as she didn't know what was happening, no one in that hall did. The demon got away after causing havoc and it also injured Jacob, to what extent I don't know."

"Wait a minute," I interrupted, "I didn't think humans could see you, unless you wanted them to?" Alec gave me a pained smile and said, "That's exactly what we want to know, is she actually a human? We know that she's a vampire but we want to know how she can see us, there's something different about her."

"That's what your here for, we need you to find out anything and everything you can about Renesmee and that way we can try and restore peace to Forks and New York, so we can do our jobs as shadowhunters properly." Jace informed, I was still slightly confused, "But how do I try and find out things about her?"

"Do you mind going to her house? You're going to need to question her," Alec said, Simon suddenly sat up in his chair, "Wait a minute, does Clary get a say in this situation, this could potentially harm her."

"Clary is a smart girl, she knows what is right. Anyway, Jace and I won't be far away, so if disaster strikes we'll be there right away," Alec reassured. "Obviously some might get there faster than others," Jace brought up his arm and flexed his muscles, showing off his strength. Alec tutted and blushed, Simon sat back in annoyance and I couldn't stop a giggle erupting from within me.

"So Clary are you in," Alec asked hopefully, I gave one sharp nod, "When are we going?"

"Now," Alec said. I looked at Simon and he was staring at me with doubt, "You're not really going to do this Clary, are you?"

I smiled apologetically, "I am, I have to Si." I looked over at Jace and Alec who had already stood up and were standing by the front door. "I suppose I better be getting home then," Simon relented and he stood up and followed me to the front door. "Let's go then," I said and then we all left the house and headed into the unknown.

I was kind of nervous, all I had to do was question Renesmee but I didn't even know how to do that? How do you ask someone politely what species they are? This could either go well or really bad.

A/N: I do not own any of the Twilight/Mortal Instrument characters.

Would like to thank my beta reader LivieQuinney and CHECK OUT HER STORY SHE'S WRITING AT THE MOMENT! :)