The Double

Rescue Mission

"JACKSON! NO! GIVE HIM BACK YOU-" Clary's screaming was quieted by Jace putting his hand over her mouth. She started sobbing uncontrollably, her whole body quivering. I just found my little brother, she thought, and I got him captured again. What will happen to him? She still saw the glimmer of dying hope when he fell to the ground.
"Clary, be quiet. We don't want everyone rushing out to get us. We need to get back to New York. Can you draw a portal?" He asked, stroking her fiery red hair.
"Yh-Yeah," she stuttered, "I can do that. And we'll get everyone and take him by surprise!"
"That's the spirit!"
Clary began picturing the New York Institute and walked over to the side of the Institute, with everyone there to help her, comfort her, finally. She could get the moment she was dreaming of for the past two months. She took the stele and began to draw, building a portal. They went through, and stood out in the church courtyard. They walked into the elevator and headed down. Once they got out, they were tackled by Isabelle and Simon.
"WHERE HAVE YOU BEEN!" Izzy shrieked. "I HAVE BEEN SEARCHING FOR YOU FOR TWO WHOLE MONTHS!"
"Uhh," Clary started, "we kinda were...umm...kidnapped by Sebastian"
"WHAT!" She and Simon both shrieked at once. "But...he's dead. You stabbed him yourself. We were all there." Simon tried to reassure them. Ever since he had ascended into a Shadowhunter and gotten married to Isabelle, all his memories had come back. (With a little help from Magnus).
"Before he had gone to Edom, he had made a double of himself. That double was what I killed. He had a very specific reason to make that double." She hesitated. How am I supposed to say this? She wondered. "I have...another brother."
"WHAT THE CRAP!" Izzy and Simon yelled again.
"Can you guys quiet down and LISTEN to me?!?!" Clary said. "He's a Shadowhunter too. Sebastian said that he needed the three of us...to make a weapon."
"Okay. You. Need. To. Sit. Down. And. Explain!"
They all walked into the library and sat down. Clary and Jace took turns explaining what happened. When they finished, Simon looked even paler than normal, and Izzy's mouth had fallen to the floor. However, she jumped straight into action. "We need to get Alec and Magnus over here. I'll send a message. You guys get prepared in the weapons room."
Three minutes later, Alec and Magnus stumbled through.
"Why exactly do you need us?" Alec inquired. Izzy explained everything while Alec got his gear on. "Well then," He replied, "We're going to need a portal."

In the dungeon, Jackson waited and waited. He wondered what was going to happen to him. Was Sebastian going to kill him? Torture him? Do nothing? All Jackson could do is hope for the latter. He needed a hero. After two hours since what had happened with Sebastian, he himself walked through the door with a bundle of what looked like Shadowhunter gear, except it was blood-red. "Put this on." He ordered. "And meet me outside when you're done." Jackson did as told, and knocked on the secret door. It opened. That's a first, he thought, and he walked into the apartment, looking for Sebastian.
"Hello?" He called out. "Is anyone there?" His felt the prick of a stele on his neck, and he fell asleep. Before he even opened his eyes, he saw a bright light shining through his eyelids. He cracked them open, and saw that he was in the middle of a pentagram lined with runes, each pulsing with black energy. He stood up, seeing that Sebastian had his back turned, and tried to leave the circle.
And he ran into an invisible wall, which caused the circle to flare up and Sebastian to turn around. "Glad to see that you're up." He said sarcastically, and pulled out a knife. He walked into the pentagram and ran the knife down his arm, making a shallow cut. He collected all the black blood that dripped out into a silvery-looking cup. After the bleeding had ceased, he took the knife again and made a shallow ditch inside the pentagram. He stepped out and ordered Jackson to lie down in the center of the circle.
"What's going on?" Jackson asked. "I didn't sign up for this weird crap!"
"What's going to happen," He explained, "is that my demon blood will take over part of your angel blood, putting you under my control, creating a bond between us that cannot be broken, and also turning you into a warlock."
"WHAT!" Jackson shrieked.
Before Jackson could protest any longer, Sebastian started chanting in latin and he poured the blood in the circular ditch he made. It started to glow, and the pentagram made the blood rise into the air and begin to spin, speeding up as it rose. When he finished, the pentagram had disappeared and the blood was a dark blur in the air. He spoke one more word, and the blood flew straight into Jackson. He arched his back, screaming in pain. His eyes flew back into his head, showing only the whites. Those whites then turned pitch black as his pupils expanded, then shrank back, showing his normal eyes, except that there was a ring of silver in-between the iris and the pupil, just like Sebastian's.
How could I be so stupid? He thought. Of course Sebastian was the right choice. He walked right up to Sebastian and kissed him passionately on the lips.
Just then, they heard the sound of a portal opening.
"I know what to do, My Lord!" Jackson said, dashing upstairs