Heeey guys! So this is my first story that im writing for fanfiction. Ill try my best to update as much as i can(; Please review! give me you're honest opinion. I think i should add more Clary and Jace! Well thankyou!(:

Disclaimer: i dont own the characters or setting and etc. i only own the plot (:

A Sequel to the Mortal Instruments Series

Prologue: I Was Wrong

When Jace found out Clary wasn't really his sister, he felt a wave of relief and happiness. They can finally love each other like they should, without people saying that it was wrong.

But, another part of him felt sorrow and pity. He really didn't have any family members with him now. All of them have passed. His mother and father were killed by Valentine. Now….he had no one in his family to be there for him, except for the Lightwoods and Clary.

Jace, Clary, Alec, and Isabelle were in the library at the Institute, talking about their trip from Idris.

"It was nice, but-"Clary said, but she was cut off by Jace who was sitting next to her on the red couch.

"It wasn't for you." Jace said, finishing her sentence.

"Yeah. Remember when-" Isabelle was about to say, but the phone in the library rang.

"I'll get it." Alec said, as he stood up and strode over to the phone. "Hello?" He said when he picked up the phone.

He nodded his head and looked at Jace. "Yeah, he's here. Do you need to talk to him?"

Jace looked back with his golden eyes, surprised.

"Ok." Alec said and he outstretched the phone to Jace. "It's Amatis, she wants to talk to you." He said with a confused look.

Amatis was Luke's sister. Luke was a "friend" of Clary's mother, Jocelyn. Amatis, Luke, and Jocelyn were Shadowhunters, but Luke was turned into a werewolf about 16 years ago.

Jace got up, took the phone out of Alec's impatient hand, and he put the phone up to his ear. "Yeah?"

"Hello Jace. How are you?" Amatis said, she sounded happy.

"I'm good." Jace said, hesitantly. Why was she calling Jace?

"Great! How's Clary and everybody else down there at New York?"

"Um, good."

"That sounds very good." It sounded like she was running out of words like "good".

Jace looked around the library. Isabelle now sat next to Clary. Alec was sitting at the window seat. All of them were staring at him, curious.

"Jace, you're probably wondering why I called you." Amatis said.

"Yes. I am." Jace said. "Why did you call me? Is everything alright in Idris?"

"Idris is fine. And it's not bad news, it's good ones." Amatis sounded excited. When Jace say nothing after 5 seconds, she went on, "Jace, remember when I told you everyone in your family passed away?" She asked.

Jace's eyes widened. He looked at Clary. She was staring at him, questions burning in her throat. "Yeah." He said into the phone.

"Well," She sounded like she took a deep breath, "I was wrong."

Jace mouth hung open, his golden eyes bright with light.

"Jace, you have a sister. I'm sorry. I just found out right now."

Jace stood there, frozen. Clary was standing next to him. She put a hand on Jace's shoulder. "Jace? What happened?" Clary asked. Isabelle and Alec walked over to stand in front of them.

Jace gulped. "I-I have a sister."

Jace stood frozen, Clary took the phone from him. He stood there, staring at the floor. His face was pale.

"What's her name?" Clary asked into the phone.

"Her name is Adaline Baxter. She is Jace's twin, actually. She is 17 like him."

Clary smiled and turned to Jace. "Her name is Adaline Baxter and she's your twin!" Clary said, excitedly.

Jace felt an urge to go meet his sister. He has a sister? A sister who shares the same blood. This wasn't a chance he would miss. "I need to go meet her soon. Where does she live?" He asked.

"Let me talk to Jace." Amatis said on the phone.

Clary handed the phone back and hugged Jace, happily.

Jace smiled and asked into the phone again, "Where does she live?

"She lives in Elizabeth, New Jersey." Amatis said. "She goes to the public school there called "Elizabeth High". And that's all I know about her."

"No. That's alright. I'm very happy. We got to go. We have a trip to New Jersey."

Sorry! That was a very short chapter! Until next time!

~xoitalianbabexo 3333