Magnus and Alec stepped out of the portal into their loft and Alec stopped short at the sight of Jace in the Malachi Configuration. They'd gotten the call while they were on their honeymoon and came back straight away.

"I didn't believe it." Alec said, dropping the duffel on the ground. "I don't believe it. Where are the kids? Where are my kids? They're not here, right?"

"They went with Catarina." Izzy told him quietly. "Alec. It isn't him, not really. The demon is just possessing his body. You said it yourself on the phone, your rune isn't back. Jace is dead."

"So how do we do this?" Clary asked.

"Two people will go inside Jace's - the demon's - mind. We need to get the demon's hold off of the body, otherwise we won't be able to stop Lilith or the . . .Owl."

"Me and Izzy." Alec said. "Let's do this."

Magnus sighed and let his eyes cut back and forth between Alec and Izzy and the demon controlling Jace's dead body. "Fine."

He lit his hands up with magic and spread his hands to let the magic flow through Jace, Izzy and Alec. The three siblings' eyes rolled into the back of their heads as Magnus' magic kept them standing.

"We're in the Institute." Alec noticed as he and Izzy appeared in a very dark, very quiet and very empty institute.

"Inside the demon's mind." Izzy said. "Why would it bring us here?"

"It's manipulating us." Alec told her. "Don't fall for its tricks."

They heard the sounds of swords clashing and children playing and ran for it.

"I got you!" A little girl yelled.

They made it to the training room to see younger versions of themselves and Jace training.

"I remember this." Alec grinned. "This is the night mom and dad went on a mission in Geneva and we snuck downstairs to train."

All of the sudden, Alec and Izzy's younger selves disappeared and Jace panicked.

"No." He said backing up. "No. Don't take them away too!"

"What just happened?" Izzy asked her brother.

"It's the demon." Alec told her. "It's trying to manipulate us, it's using Jace's memories, I don't know. This shouldn't be possible."

He turned to look at Izzy only to find her gone. "Izzy? Izzy! Where are you? Izzy!"

Alec turned and rushed down the hallway and all around the Institute calling for his sister. He turned into a hallway in the residential wing of the Institute and found blood on the floor, leading into a room. He entered the room and found Clary propped up against the wall, dead.

"Clary!" He gasped, falling to his knees in front of her. "Oh, Raziel. Clary, no. Not you too."

He was starting to panic and then he really looked at her. This isn't what Clary had been wearing when they entered the demon's mind. She hadn't gone with them. This isn't real.

He quickly stood up and looked around. There were dozens of Clary's laying around the room, dead. Black hair spread out behind her, blood stained shirt. Some of them had been dead for ages, others were obviously recent kills.

Alec looked towards the bed, where Jace was sitting, sobbing, over another Clary, knife in hand.

"Jace?" Alec asked, trying to get the demon's attention. Alec wasn't sure what he was planning on doing, he had no plan. Izzy was missing and this was all so confusing. All he wanted to do was get this over with and get back to his husband.

"I tried not to." Jace told him. "I tried every time."

At this point Alec decided to just play along with the Jace impostor. Just until he could find Izzy and get the hell out of here.

"It's okay. Alright?" Alec said kindly. "None of this is real."

"Lilith's torturing me. She's punishing me. She's - "

"I'm going to get you out of here, alright?"

Jace scrambled off the bed. "No, please, please, I can't."

"I won't, okay? I won't. I'm not a part of Lilith's mind games." Alec told him. "I'm real. This is - This is real."

"You're really here?" Jace asked.

"Yes." Alec said. "Please."

Jace dropped the knife and brought Alec into his arms, hugging him. Jace sobbed into Alec's shoulder.

"I've got you. Alright?" Alec said. For the slightest second, Alec allowed himself to forget that this was a demon. That Jace was dead. He just stood there and embraced the monster that was wearing his brother's face.

Jace stopped crying and pulled back, looking around. The dead Clary's were all gone which Alec was thankful for. Even though he knew that Clary wasn't really dead, that this was all a delusion, he didn't like seeing his sister dead. He knew he wouldn't survive her death, not after losing two siblings already.

Izzy then walked into the room. "Jace?" She gasped.

"Izzy." Jace smiled.

"Jace!" She smiled and ran to him, hugging him around his middle.

"Iz." Alec said quietly. "It isn't really him."

Izzy pulled back and frowned. "I know." She said quietly, she moved backwards to stand next to Alec. Her face was one of disappointment and acceptance.

Jace was dead. This was a demon, not their brother.

"Alexander!" Alec stumbled, his wedded union rune glowing under his shirt. "If you can hear me, hurry!" It was Magnus. They needed to get this over with and fast.

"We have to go now." Alec told his sister.

"I can't." Jace shook his head.

"What are you talking about?" Izzy asked. They had to get the demon to come with them so that they could defeat it.

"She's going to come for me, she's never going to leave me alone." Jace cried.

"We'll stop her." Alec said. "But we have to get out of here. We're running out of time."

"You can't stop her. No one can. There's only one thing you can do."

Jace picked up the dagger off of the floor. "Alec. I need you to kill me."

"What?" Alec asked. Logically, Alec knew this was a demon. It was a demon manipulating him. But emotionally, this was his brother, looking at him, crying, asking him to murder his Parabatai. It was his little brother, and he couldn't do it.

Jace put the dagger in Alec's hand and helped the man wrap his fingers around it, holding on to Alec's hand and the dagger with both of his own. "Please." He begged. "Please. I've tried, I've tried so many times. Please, Alec. I'm begging you."

"Jace you can't ask me to do this."

"Please, Alec."

"Never!" Alec said. "You're coming with us. Okay?"

Jace just shook his head and moved on to Izzy.

"Izzy, listen. I did all those things. I threw Clary off that rooftop, I possessed all those mundanes, Imogen."

"Whatever it is, it wasn't you, Jace." Izzy said. "It was Lilith."

"It doesn't matter." Jace told her. "If I go with you, she'll make me do worse."

Jace slipped the dagger into Izzy's hands and positioned it for her.

"If you love me, do it."

Alec knocked Izzy aside, grabbed the dagger and plunged it into Jace's abdomen.

"Alec!" Izzy cried.

Alec looked at Jace in shock. He was looking up at his brother with wide, teary eyes. Blood started coming from his lips and it was spreading across his t-shirt from the stab wound.

"How could you?" Jace asked him, blood dribbling down his chin and staining his lips. "You should've known I didn't mean it. I didn't want to die. How could you let me die? First Valentine killed me and then he almost killed Clary and now you've killed me. What kind of a brother are you? You're a failure Alec. You're a bad brother, a bad leader, a bad Parabatai, a bad friend, a bad husband and a bad father. How could you do this to me? How could you murder me in cold blood?"

The room was enveloped in gold and all Alec could see was black.

Alec woke to a whooshing sound and he realized he was laying on his living room floor. He sat up and saw Jace's dead body lying parallel to him, with the dagger still sticking out of it. Fresh blood coated Jace's shirt and lips. Alec looked to his side where Izzy should've been but she was gone. Alec looked around and saw that she was nowhere to be found and the balcony doors were wide open.

"Izzy?" Alec called.

Magnus pushed himself upright, hand still cupping his throat. Clary was sitting up, staring at Jace's body.

"Lilith took her. We couldn't stop her." Clary said quietly.

"No." Alec whispered in horror.

"What happened? Why is he like that?" Clary asked as Alec finished settling his husband onto the couch.

"I killed him." Alec said quietly. "He begged us, he was begging us and I know it wasn't him, but... I just broke and I killed him. And then he started saying things... Why take Izzy?" Alec changed the subject.

"With Jace killed, Lilith will need a new owl. The spell that we had to use to send the two of you into his mind, it left you vulnerable. It was easy for her to take and possess Isabelle." Magnus sighed looking upset. "She probably knew better than to take you. I would've burned the world down to find you. We will find Izzy, Alexander. I promise you. She's my sister now, too."

"Sorry to interrupt." Magnus entered Alec's office at the Institute.

"You're never interrupting." Alec stood up from behind his desk where he and Clary had been talking quietly. "What's up?"

"I've been researching the dark magic Lilith has been using on Jace and now Izzy. I think I found a way to stop her."

"What?" Alec straightened up. "How?"

"Based on your descriptions," Magnus patiently explained. "It seems Lilith has Izzy locked in some kind of a mental cage, and the only solution is breaking that cage by blasting Izzy with enough magic to eviscerate her presence.

"Do you have the power to do that?" Alec asked. "That sounds like a loft of magic. I don't want you to hurt yourself."

"No," Magnus said. "But I will. Catarina, Tessa, Wesley and Lorenzo Rey have already volunteered to help. That should be enough. In the book of the white, I found a Synthesis spell that'll allow me to temporarily channel the magic of other warlocks, hence the help."

"Let's do it, then." Alec nodded. "If you're certain."

"I am."

"This is an emergency!" Jordan yelled desperately. "I need to speak to Alexander Lightwood-Bane! Alec!"

Alec stepped off the elevator to see Jordan arguing with the guards.

"I'm Simon's Praetor, Jordan. I need to speak with you."

"Release him!" Alec ordered, walking up to the Praetor.

"So, do you remember the vampire, Heidi?" Jordan asked as the pair turned and made their way towards the ops center.

"The blonde vampire that Simon sired?" Alec asked. "Vaguely."

Jordan nodded. "She escaped from the Praetor Lupus last night."

"How did that happen?" Alec asked as he turned and looked at Jordan. "If I remember correctly, Heidi is unstable and prone to violence."

"She was being escorted by three praetors when somehow she broke free and..." He hesitated. "She killed them all. I think she has Simon. I left home to grab some blood for him and when I got back there was broken glass everywhere and no Simon."

"Are you serious?" Alec asked, "Are you sure?"

"Look, I just really want to find him. Please, help me. I can't find his scent anywhere around town, his phone is off, I was hoping you could use Shadowhunter Tracking?"

Jordan handed Alec the blue shirt and Alec sighed, pulling his stele out.

"You really think he's in danger?" Alec asked. "You think she'd hurt him?"

"Yeah, I do."

Alec caught Simon right as he was about to lunge at Rebecca.

"Simon! No!" He wrapped his arms around Simon as tightly as he could. Simon bucked against him trying to get to the blood. "Jordan, you take care of this. I'll take care of him."

Alec pulled Simon out of the house and around the side of it.

Simon was growling and he looked desperately hungry. "Here. Drink my blood, just try not to kill me." Alec shoved his wrist in Simon's face and the young vampire didn't even try to resist, biting down and shoving Alec against the side of the house.

Simon was gulping the blood down and Alec felt floaty, just as Alec's vision started to blur, Simon was shoved off of him and Alec could feel his husband's magic wrapping around his wrist, healing it.

"Never drink from my husband ever again." Magnus threatened Simon before turning to Alec and framing his face in his hands. "My darling love, are you alright?"

"I'm fine, Magnus." Alec mumbled even as Magnus sent his magic throughout Alec's body, looking for injuries. "How did you know I was here? How did you know to look for me?"

"Underhill told Clary that you and Jordan went after an unstable, violent vampire with no back up."

"Where's Clary?" Alec asked.

"I don't know." Magnus said. "She said she had to go take care of something, I came straight here, sedated Heidi and came out here to find Sharon feeding on you."

"I told him to." Alec confessed.

"He could have killed you." Magnus told him, seriously.

"He was starving." Alec said. "I was trying to be nice."

Magnus opened his mouth to say something when Alec's phone rang. Alec pulled it out of his jacket pocket, smiling at Magnus when the man caressed his face with a smile.

"Lightwood-Bane." Alec answered. "What?!"

Clary wrenched away from the possessed mundane woman who led her up to Lilith.

"Raising Jonathan from the dead. Is he really worth all the murder?" Clary asked her.

Lilith handed her tea cup off to another mundane, standing at attention against the wall near her. "The things we do for our children," Lilith sighed. "Besides, the mundanes killed by my disciples will do far more for this world in death than they'd ever do in life."

"And yet you need me alive." Clary said. "How does that work, exactly? I mean, you can't really just borrow my heart."

"Oh, I'm afraid that's exactly what it's like." Lilith said. "But the heart isn't what you think. Jonathan needs to share your life force in order to breathe again. So I might hold him once more. Losing Jonathan, hearing him call for me with his final breath . . . was the single most painful moment of my very long life."

"You say that like you loved him." Clary tilted her head to the side, not understanding, not believing that this woman was truly capable of love.

"Why wouldn't I?" Lilith asked. "Dear one," She stopped a mundane, "bring our guest a drink, would you?"

"Demons aren't capable of love." Clary accused.

Lilith sighed. "A failing of frail human imagination. Demons live, we die, we feed, we lay. Why wouldn't we love like you?"

The mundane returned and gave Clary the cup. Not thinking about it, Clary took a drink. And another. And another.

"I need to care for Jonathan like you and your father never would."

Clary laughed. "If there's one thing that Valentine and I could agree on, It's the fact that the world is a much better place with a monster like Jonathan dead and buried."

Lilith struck out at her, slapping her across the face so hard that Clary cried out and her eyes watered. Lilith used her magic to wrap the fireplace tools around Clary's wrists and ankles.

"My son is not a monster!" Lilith told her. She turned and marched out towards the balcony.

"Simon's been in the building forever." Alec complained to Luke. "What's taking him so long?"

"It's a high rise." Luke shrugged.

"Sorry." Simon apologized as he made it back to the two men. "I tried to get as close as I could without anyone noticing, but my vamp ears couldn't hear Clary inside anywhere."

"Lilith must be concealing her location with some kind of glamour." He pulled his stele out and pushed his sleeve up, running his stele over a rune.

"What's that one do?" Simon asked curiously.

"Spiritum." Alec answered. "It allows us to see currents of supernatural energy. So if we can't see the shark in the ocean, we can still see the waves."

Alec closes his eyes and opens them again. "There are portal wards on the perimeter and she's redirected the ley lines to the top floor." He closed his eyes again and let the rune lose its effect. "I've never seen magic that strong before. Magnus went to go coordinate the spell with the others, he won't be able to help us here. We have to get Clary out of there, no matter what."

"Lilith is going to throw everything she has at us. Including Izzy." Luke told them.

"For the record, I'd prefer not to vaporize Izzy if she tries to kill me, but I can't exactly control how this thing works, or the fact that she'll probably try to kill me during the fight."

"That's a good point." Alec agreed. "I have another way you can be helpful. He tossed Simon his stele."

"What am I going to do with a steely?"

"Stele." Alec corrected.

"I've heard it both ways."

"Looks like security is the last one out." Alec reported into his phone.

"Which means we've got about five minutes before emergency response gets in the way." Luke replied.

"Here's to hoping Lilith has a short fuse." Alec remarked.

"How do we know if she takes the bait?" Simon asked.

"Call it a hunch." Alec answered as Izzy leapt from the top of the building and landed in front of him. Alec snapped his phone shut and notched an arrow, aiming it at his little sister.

"Careful." Izzy warned. "She's still in here."

"It's not her I'm going to hurt." Alec told her.

He shot the arrow towards her shoulder and she put her hand up, stopping the arrow in mid air before letting it drop to the ground.

Alec was shocked but didn't let it show for long, he lowered his bow as Izzy began to speak again.

"I could kill you with my magic right now." Izzy told him. "But I'd rather make Izzy watch as I tear you apart with her hands."

Izzy and Alec started to circle each other before Alec swung his bow up again and attempting to fire before Izzy bum rushed him and pushed him into the wall behind him. Izzy punched him in the gut twice before going to break his nose. Alec ducked before her fist could make contact.

Alec rolled away from Izzy and pulled two arrows out of his quiver and started to stand up. Izzy pulled her blades out of her jacket and they swung their blades and arrows at each other.

Alec stuck an arrow in Izzy's calf, feeling guilty as soon as he had done it. He felt dizzy and he knew it was because he had let Simon drink from him, otherwise he would've normally overpowered his sister. Not been so evenly matched.

It wasn't long before Izzy had Alec backed up against the wall, his vision blurring as she shattered his hand and snapped his ankle, making him scream. Alec tried to scoot away from his sister, but he knew it was futile. She kicked him over onto his back, his head bouncing off the concrete painfully making his vision go black for one of the longest seconds of his life. When he regained his vision Isabelle was crouched over him, an arrow in her hand, positioned over his heart.

Alec was coughing pitifully. "She's crying, you know? She's begging me not to do this. It's pathetic. Just like you."

Izzy brought her arm back and moved to sink the arrow into his chest. Alec caught her wrist just before the arrow made contact.

"Izzy," He grunted as they struggled. "I know you're in there. Honey, it's okay. It's okay. I forgive you. It wasn't you. Just, tell Magnus I love him, and Madzie and Raphael and Clary. Please. I'm sorry we couldn't save you. I'm sorry."

Izzy finally won and sunk the arrow into Alec's chest. Alec's mouth fell into a silent scream.

Izzy grabbed him by the hair and forced him to look her in the eyes. "I want you to look me in the eyes when I kill you."

"Alec!" Magnus' panicked scream tore through the air. Izzy looked up in shock and let Alec's head drop back onto the concrete, making another wave of intense pain reverberate through his skull.

Red magic shot Izzy off of him and Catarina and Wesley were sitting on either side of him. Cat had her hands on her face and her lips were moving rapidly. She was talking, saying something, Alec just couldn't hear it.

He could feel an unbelievable pressure in his chest, it was like someone was tugging something out of it, and then he turned his head, forcing Cat to let go and he realized Wesley was trying to pull the arrow out.

"No, please." Alec gasped. "It hurts. Don't it hurts." At least he thought he had spoken, he couldn't hear himself talk, but Wesley had stopped and made eye contact before looking over Alec's head and speaking once more. He tightened his hand on the arrow and started to pull it out. Alec threw his head back and screamed as he felt hands in his hair and on his face and multiple Warlock's magic washing over him.

"Stop, please stop!" Alec begged silently. Why couldn't he hear? "Stop! It hurts!"

And then the arrow was out and more magic washed over him. He opened his eyes and he saw Magnus' unglamoured eyes. Magnus was sitting at his head, fingers carding through his dark black locks, wedding ring catching some of the hair every so often. Tears were falling from his eyes as he sadly gazed down at Alec. His lips were moving, he was talking. Alec just looked up at him, trying to convey the confusion and desperation into his gaze as he shook his head the tiniest bit.

Magnus' brows furrowed and he leaned closer, just a little. He said something, more urgently. Alec just blinked, staring up at his husband, letting a few tears trail down his face.

Magnus placed a hand on Alec's forehead, Alec felt the pulse of magic travel through his head and sighed in relief when the pain ceased and his ears cleared. He flinched slightly when he heard the yelling. Catarina, Wesley and whom he assumed was Tessa were all shouting.

"He's still bleeding!"

"His ankle is shattered!"

"So is his hand!"

"Ribs are broken."

"There's some really bad bruising here."

"Darling? Can you hear me now?" Magnus asked him quietly.

"Magnus." Alec wheezed. "Magnus."

That's when the building exploded. Magnus didn't appear to think twice before curling himself up over Alec's head. Alec felt Wesley lean over as well, protecting his chest.

"No," Alec protested. "No. They were all in that building. No."

The rubble stopped falling and the Warlocks sat upright again.

"Alec!" Izzy cried, running over to her brother. "By the Angel. Alec I'm so sorry. I'm so sorry."

Fat tears were running down her face as she sobbed over him.

"You have to help him, please. Fix him, please."

"We've got him, Isabelle. He's going to be okay." Magnus promised her.

"Go find Clary, Luke and Simon. That's an order." Alec coughed.

Izzy hesitated, looking down at Alec sadly.

"Iz, I'm okay. I'm with my husband and my friends. Magnus won't let anything happen to me, we both know that. He couldn't get rid of me if he tried. You all are stuck with me. Now do as I say and find our friends."

Izzy leaned down and pressed a kiss to Alec's forehead before running off towards the building.

"How bad is it?" Alec asked the warlocks huddled around him.

"You're going to be just fine, Alec." Catarina told him.

"Just hang in there, mate." Wesley squeezed Alec's hand.

Alec's vision blurred again and he saw the blackness on the edge of his vision. "No." Alec whispered.

"What?" Tessa asked. "What was that Alec?"

"Magnus," Alec sobbed. "I love you."

"So, can you teach me?" Magnus asked by the waterfront, fingering the strings of the instrument.

"I do not see why not." Imasu smiled at Magnus. "Are you sure you want to?"

"I have never been more sure of anything." Magnus winked at the man. "When can we start?"

"Tomorrow." Imasu told him, running a finger over the strings, plucking them as he goes.

"It is a date." Magnus told him.

"It is not a date." Imasu grinned as he stood up.

"Yes it is."

"Stop." Imasu pried the charango from Magnus' hands. "Just stop."

Magnus looked into the man's dark brown eyes. "Was I doing it wrong?" He asked, cocking his head to the side.

"I do not think this is working." Imasu admitted.

"W-what?"

"The instrument. You are not very good at it." Imasu told him bluntly.

"I'm wounded." Magnus told him with a small smile.

"I only agreed to teach you," Imasu sighed. "because I wanted to get to know you."

"Well," Magnus moved closer to the man, pinning him to the wall. "I am glad that we have the same motives, here."

Magnus pressed his lips to Imasu's and he couldn't help but smile.

"We have been together a year now." Magnus told Imasu as they sat out by the water.

"Yes," Imasu agreed. "But I do not believe that this is going anywhere, Magnus."

"What do you mean?" Magnus turned to him, a look of devastation on his face.

"Magnus." Imasu sighed. "I apologize. But I think you are too ephemeral for my taste. This, it would not have lasted. It is better that we go our separate ways now."

"Imasu," Magnus took his hands in his own. "Please, do not do this. I can change, I can be whatever you need me to be. I'll do anything, anything."

"There is nothing that you can do, Magnus. We are over."

"When is he going to wake up?" Izzy asked Magnus and the other Warlocks in the room.

"I don't know, Isabelle." Magnus shook his head.

"How are we supposed to tell him that Clary is dead?" Izzy asked. "How are we supposed to tell him that we don't have any siblings left."

"I don't know."