Au:This chapter is very dramatic and contains some upsetting scenes. Trigger warning. Please read and review, I don't know how this chapter turned out and I need to know your opinions before I write the next chapters

Jace's POV:

I was leaning on Izzy whilst Clary went to the loo.

"You love her, don't you?" She asked

"Yearh, I doo," I slurred. Suddenly the music stopped, the lights turned off and there was a bloodcurdling scream. Clary! I'd recognise that scream anywhere. I sobered up immediately. Everyone pushed out the front door and on to the lawn. Clary was pushed up against a tree by Sebastian, who was holding her throat and growling something at her in a low voice. Clary shook her head and Sebastian's hold tightened.

"Clary!" I yelled and ran over but stopped when Sebastian turned towards me and pulled out a knife. Clary used the distraction to kick him between the legs and push him off her. Her collapsed on the grass but sprung up again quickly.

"I'm calling the police!" Jordan pulled out his phone.

"Clary, clary, clary! I only wanted to talk to you!" Sebastian shook his head, circling her.

"About what?" She asked, her fists clenching.

"You know that debt I owed you?" He asked. Clary nodded and Everyone fell silent.

"Who was it?" She asked. Sebastian smirked and leant in, breathing in her scent before trailing kisses down her neck. I growled and a group of people had to hold me back.

"Me. I killed your parents," Sebastian said, his arms circling Clary's waist, "so I could have you!"

I froze. Sebastian murdered Clary's parents?

"You bastard!" Clary pulled away and punched Sebastian. It caught him off guard and he stumbled. Clary took the chance to lunge at him, raking her nails down his face until blood sprang. She tried to kick his legs out but he jumped.

They fought, throwing punches and screaming at each other. I was restrained again by the others.

"How could you? Why did you do it? Did their lives mean nothing to you because they sure as hell did to me!" Clary yelled, spinning and kicking Sebastian.

"My, my Clary. My training came in well I see. I did train you to be an assassin to be fair!" The group gasped as Sebastian pulled out another knife. Clary kicked it out his hand and caught it. Sebastian lunged at her, grabbing her top and ripping the bottom of it off. Everyone gasped again as they saw the scars and the word.

Mine!

"I marked you, I made you mine. Come with me Clary and I'll let your friends live" he pulled out a gun and aimed it at me.

Clary's POV:

I was kicked to the floor and when I looked up a gun was trained on Jace. Anger coursed through my veins. Sebastian kicked again and I heard a rib crack. I groaned and rolled away, leaves and twigs getting tangled in my hair. How dare he? How dare he have the audacity to come here, tell me he killed my parents, try and kill me and then point a gun at my boyfriend. I hated Sebastian with everything I had. I would rather be killed a thousand times over than let him live a moment longer. I jumped up and stabbed the knife into his stomach. He growled and grabbed me by my neck before shaking me. I wanted to kill him. Slowly my hand inched down towards his waist band.

"Good Clary, if you gave me this in the first place then this wouldn't have happened. I unbuckled his belt and undid his jeans, my hands shaking. "Go on, do it!" Sebastian shook me again. I trailed my hand over his boxers and around to his ass. He moaned and pulled me flush against him. I was standing on my tip toes. If he lifted me any higher he would strangle me. I reached my other hand to his gun hand and pushed it down to his side. He dropped the gun to the floor and used the hand to skin up underneath my skirt before pushing me on my knees in front off him. He started to lower his boxer shorts and fisted his hand in my hair.

"Clary! Don't do it!" Jace yelled. I shuddered and held back vomit as I trailed my fingers over Sebastian's body, disposing of his weapons in a way he wouldn't notice. When he was weapon free I dropped one hand to the floor. I could hear Jace's sobs and struggles and everyone else gags or protests. Several guys were being held back. My hand curled around the object I was looking for. Blood from Sebastian's wound dripped down his stomach and legs.

I took a deep breath and looked up to see Sebastian smirking cruelly down at me. I was going to be sick. In the darkness no one could see the pitch black gun until I pulled away from Sebastian, stood up and pointed it at him. I walked backwards until I felt Jace's behind me.

"Stay," I told both of them. "Get dressed," I jerked the gun at the jeans on the floor. Sebastian pulled them up and did them up slowly. "Now put you hands where I can see them!" He obliged I walked forward and kicked the pile of weapons away from him. More people flocked out of the house on hearing the commotion.

Red and blue lights flashed, sirens wailing, cutting through the silence like a warm knife through butter. Police cars pulled up on the curb, officers climbing out, speaking into their radios.

"...request back up immediately!"

"...has a gun..."

"...extreme danger,"

"...group of teenagers,"

"...pile of weapons scattered on floor..."

"SHUT UP!" I roared, never looking away from Sebastian. They fell silent. I had never felt more murderous.

"Why did you kill my parents?" I asked, my voice like steel.

"You know I won't say anything Clary," Sebastian grinned. I clicked the safety off and shit at his feet. I swear he jumped five feet I the air.

Jace's POV:

It was completely silent. You could hear people's ragged breathing but apart from that there was nothing. You could taste the danger in the air. I couldn't believe it. Sebastian had killed Clary's parents and trained her to be an assassin. I hated to admit that I was a little turned on by Clary's dangerous-I-will-kill-you-and-dance-on-your-grave attitude. Everyone couldn't believe it. Our Clary was practically raise by a monster.

"Why did you kill my parents?" Clary asked, her voice like steel.

"You know I won't say anything Clary!" Sebastian grinned into the darkness. The police men pulled out their weapons. Clary shot at his feet and he jumped five feet in the air.

"Your father owe'd me money. I said that if they gave me you then I would let them live. They wouldn't give you up so I killed them," he said. The police men scribbled down notes and recorded the conversation.

"Why me?" Clary asked and I felt sick.

"I wanted my own little assassin and then later. I wanted a wife." Clary visibly shuddered.

"Get out of here. Never come back or I. Will. Kill. You. Damn the consequences." Clary shot at his feet again. Sebastian looked genuinely scared. I didn't blame him. I was scared too. Sebastian was arrested. Clary was taken in for questioning.

"You'll probably be rewarded for helping bring him in. The CIA and the FBI have been looking for him years," One of the officers said.