Disclaimer: I don't own Shadowhunters or The Mortal Instruments. I am just borrowing the characters.

Chapter 1 - Does blood call to blood?

Clary's POV

" i am your father, Clary. And Jace's... Think about it. Why are the two of you so drawn together? You are meant to be. Blood calls to blood, no?"

Those words kept repeating in my head as I sat next to my unconscious mother. I caressed her hair and cheeks but as a matter of fact I wasn't really there next to her, my mind was still processing the events of the night.

Jace was my brother. I was his sister. Or so Valentine said. I had proof I once had a brother, but was Jace really the baby boy my mom thought she lost? Or was this one more of his tricks?

The pieces added but there was just something off. I had this feeling it couldn't be true...

Or it could be the fact that I liked (more than liked) Jace that was preventing me from accepting this "new truth".

"Blood calls to blood", was what Valentine said. But was it really that? Was this warm feeling in my heart everytime I saw Jace smile, joke, or even just stand there, really a brother-sister connection? It couldn't be. It wasn't right.

I felt someone enter the room, from the corner of my eye it looked like Jace. We had avoided each other the whole way back to the Institute, but I knew he was hurting, not just from this but from discovering that his entire childhood, no... His entire life, his identity was a lie. So I didn't force anything.

He sat on of the beds, looking in our direction but not really seeing. He seemed so fragile, so lost. I don't think I had ever seen him like that...

No, I was wrong... I had seen him like that before. Only he was not really himself. It was on the other dimension, when the demon had attacked us.

Oh, how I wished things to be like in the other dimension... Everything was so simple, so light. Everyone had normal lifes, no supernatural fighting clubs. Well, except from Magnus, but his life was pretty "mundane". And more importan, Jace and I, we were... Perfect. Or it looked like it from the brief time I spent as that Clary b

What did Meliorn say... Right that the other dimension was like this one but it wasn't. How much was different? My mom was my mom, and Valentine was still my father. Izzy was Alec's sisters. Well there were of course some major changes like mom being with Valentine, Alec being an open-hearted gay and liking me, and Izzy and Simon being together.

But even we get all along there, the group was the same. The base was the same...

Something clicked at the back of my head, and I got up as quickly as I could. I looked around the room and locked my eyes with Jace's. He got up as well and anxiety rushed through him.

"What is it, Clary?" He asked and walked over to me.

"I... I have to talk to Meliorn."

"Wait. What for? Clary, we can't."

"Right, we can't... I can't. You're right!"

"Clary what is happening?"

"It's about us. What we just found out. Something is not right but I need to check it. I need Meliorn's help. Or another Seelie's..." I rambled, trying to figure out a plan.

Jace planted his hands in my shoulders, making me turn to him.

"Listen to me, Clary. I know you want it to be a lie. I, more than anyone want it to be a lie. Do you think I want to be his son, to be your brother... No... But it's true. There is no way it isn't true, Clary. Accept it." He said and his voice was bitter, angry. I know it wasn't his intention, it wasn't really me he was mad at, but he had to let it out somehow.

I got up again and pushed his hands of me.

"I need to check something. I am not trying to fight this, Jace. But I was right when I knew we wasn't Michael Wayland. Maybe I am right about this too".

I decided to go to my room and think. I needed some time alone.

On my way, I spotted Maguns and Alec talking. Those two really needed to figure things out. However, seeing Magnus made me have an idea so I ran to them. Magnus was already heading to the exist.

"Magnus!" I called. He continued walking in a rather fast pace.

"MAGNUS!" I tried again and this time we turned in his unique way.

"Well, hello there, biscuit. Very nice to see you but I am going home. Need a drink".

"Yeah, sorry, Magnus. I really need to talk to you please!"

"I already heard you and Jace are siblings. Very sad in fact, you were cute. But no, I don't have a "not-family-anymore-spell". So sorry. I have my own heart problems. Want to know my advice? Drink! It is the best remedy."

"No, Magnus it's not that. I mean, it's about that but it isn't. It's hard to explain. But I just need you to tell me something about other dimensions."

Magnus laughed, a rather evilish sound, like I was crazy or something.

"Oh, my dear, you really are desperate. Go get some sleep, it will probably help you settle those thoughts. You had a rough night. Here a little help." He snapped his fingers and suddenly I felt as if life was being drained from me. "You might want to go to your room anytime soon, it is quite powerful and fast. Have a good night, biscuit."

Feeling really sleepy and relaxed, I watched as Magnus left the Institute. Not having strength for anything else, I headed to my room as I had originally planned. Maybe I did need to sleep. But I certainly needed to talk to Magnus.

To be continued

A/N: Thanks for reading. Hope you like it! Can't wait for tonight's episode, really hope we have Clace! Will post every 2 days. Please tell me what you thought. :)