Intertwined Memories

When trying to save a young Warlock, Alec and his younger self get switched. While Magnus and the others try to deal with a baby Alec, adult Alec has to try to save his family and get back in one piece.

Disclaimer: I do not own Shadowhunter's

Chapter One

"ALEC!" Jace, Izzy and Clary's voices mingled together as a bright light engulfed the area that Alec, Emma the young Warlock girl who they were trying to save from the Circle member Pierce were currently fighting in.

Jace raced towards his Parabatai, worry and fear flooding their bond before Jace had to skid to a halt to stop himself from face planting against the wall that Alec and Emma had been backed against under the fierce attack from Pierce.

"No!" Izzy cried as Jace slumped against the wall, hand cupped around his Parabatai rune his face pale and Clary was staring at the nearby trashcan.

"Uh, guys?" Clary started as she took a step towards the can while Izzy helped Jace to his feet, seeing how unsteady he was.

"I can't feel him Iz, it's like he's there but muddled and it hurts. I can't feel my Parabatai, our brother!" Jace looked about a minute away from hyperventilating.

"The rune isn't gone, he's still alive. Focus on him Jace and breath with me." Izzy advised her hand splayed over the blond's chest protectively.

"Guys!" Clary was kneeling next to the trashcan. "You need to see this!"

Izzy helped Jace limp over to where Clary was staring wide at and she felt her heart stop in her chest.

"Alec?" Jace whispered as he wrenched himself away from Izzy only to crash to his knees with his hands reaching out.

"…Jace?" A child's voice whispered out and the darkened figure moved out of the shadow of the can, his eyes flickering over Jace's face and hair.

"Yeah, it's me, brother." Jace felt Izzy kneel next to him and Clary's hand on his shoulder, unaware he was trembling until he was stilled.

"What's going on? You're so big now…Where are we? Where are Izzy and mom?" Alec looked around confused before his eyes grew wider when they landed on Izzy.

"Hi, big brother." Izzy held her hand out slowly, remembering how he was like at this age but only just. She let out a groan of the wind being knocked out of her that was echoed by Jace when their pintsized older brother threw himself into their arms.

Izzy and Jace wrapped their arms tightly around Alec and Clary couldn't stop the smile that appeared at the obvious love that was being displayed by the three.

"Where are we? Why are you all so old and who is she?" Alec sent Clary a far too familiar glare, but it was far too adorable on the child that was being mushed against Isabelle's chest.

"We were on patrol, trying to save a little Warlock girl… Something happened and you and your older self seemed to have switched places. Everything will be fine though, I promise." Izzy brushed Alec's messed up hair out of his eyes with a kind smile she kept for people she truly loved.

"Okay, shouldn't we go to the Clave then?" Alec tilted his head a bit, keeping an eye on the redhead who he still didn't know, but the runes on her skin meant she was a Shadowhunter.

"Magnus! If this is a spell of sorts he would be the best bet and besides you know how gets when he isn't told about things that involve Alec." Clary spoke up the idea striking her at Alec's suggestion.

"Magnus would be the best bet right now." Jace agreed looking up at his sister before his attention was turned back to Alec when the kid tugged at his jacket with a serious look on his pudgy little face.

"Who is she and who is Magnus? Why aren't we going to see mom and dad?" Alec looked distressed he hated not knowing anything.

"She's Clary and she's my sister. It's a long story, but she's safe and a friend. Just like Magnus, he is a very powerful Warlock and is a…Close friend of yours." Jace took a moment to rework his wording before answering.

"Sister? Like Izzy?" Alec looked between the two, his eyes squinting up as he tried to see the resemblance between the two.

"Yeah like Izzy." Jace ruffled Alec's hair up before standing up, holding Alec up on his hip ignoring the noise of surprise and annoyance when the child realized what was happening now.

"Jaaaceee, I can walk!" Alec pouted as he tucked his face against the blond's shoulder, sinking into the protective aura that his grown-up brother was emitting with his Seraph blade in his free hand at the ready, looking every bit the Shadowhunter he was.

"I know you can Parabatai, but let me do this okay?" Jace lowered his voice as Clary scouted the way while Isabelle kept an eye on their backs so Jace could focus on Alec.

"Parabatai? You mean we became Parabatai?" Alec's face lit up and his mouth opened in awe.

"Of course we did, I told you that we would. Did you doubt me?" Jace teased and Alec puffed up his cheeks cutely.

"Never! You're my brother, I will always trust you!" Alec insisted and Jace felt his heart thud painfully at the obvious innocent trust Alec was showing in him. How many times did he abuse that lately? How many times did he go off at him?

"I bet we are the best team there is, mom and dad must be so proud!" Alec babbled on ignorant of the internal battle that was raging in Jace's heart and head.

"Very proud." Jace got out and silently thanked the Angels that they were at Magnus' building and at Clary's nod they rode up to the penthouse.

"You never told me who this Magnus is you know." Alec poked Jace's cheek trying to get the blond's attention.

"Magnus Bane, he's the high Warlock of Brooklyn." Clary smiled at Alec as the elevator rose up.

"Are you kidding me? Mom hates him! She forbade any of us from ever going near him!" Alec started to squirm in Jace's hold and Izzy cupped her brother's cheek and flashed him that same smile again.

"We won't let anything happen to you big brother, we swear it. Mom was wrong about Magnus, she was wrong about a lot of things… Magnus would never hurt you, he wouldn't hurt any of us." Izzy said firmly keeping eye contact with Alec.

"Okay…I trust you and Jace, we'll see about everyone else." Alec said stubbornly.

"That's my brother." Izzy kissed his cheek laughing when he made a face and wiped at his cheek to get her lipstick off as the doors dinged open.

"Magnus are you here?" Jace called out as he used his key to open the door, noticing Alec clutching his jacket a bit tighter as he looked around the extravagant décor.

"Yes, yes I am. What did I say about indoor voices Jace?" A smooth slightly accented voice came out as an Asian man with colorful clothes, purple-tipped stylized hair and dark eyeliner came into view. The martini glass he was holding fell to the floor, shattering into shards and the liquid staining the wood floors as his and Alec's eyes met each other.

"Alexander?" Magnus sounded like the wind had been punched out of him.

"Hello?" Alec offered up suddenly shy as he resisted the urge to hide his face in Jace's neck, but for some reason, he didn't want to look away from the Warlock.

"What happened?" Magnus's eyes flashed and blue light flickered between his fingers as he fought for control.

"Hey Alec, did you want to see the view from the balcony? It's something else!" Izzy hefted Alec out of Jace's arms and onto her own hip, walking past the struggling Warlock but paused when Alec reached out. His little hand curled around the fabric of Magnus' sleeve and the Warlock's eyes flashed to the child.

"I can't leave him here, can't you see? He's struggling for control! I can help him, I think I can at least." Alec gnawed on his lower lip as he refused to pull his eyes away from Magnus.

"Oh, Alexander you are something else." Magnus' voice was soft as his cat eyes faded away and his magic seemed to calm him around him.

Alec didn't know what to say so he just smiled, he nodded at Izzy knowing that the Warlock would be alright and it felt odd but he shrugged it off.

"What was that about?" Clary asked confused as Alec and Izzy disappeared out of earshot.

"My magic has always been… Receptive to Alexander's presence, now what exactly has happened to him?" Magnus calmed himself as he sank down onto a nearby chair not sure his legs wouldn't move over to scoop child Alec up into his arms and never let him go.

"We aren't exactly sure, we just know we need to keep this from the Clave for as long as possible," Jace said glancing at where Izzy was pointing at something in the distance for Alec's benefit.

"So you came to me first, smart choice." Magnus hummed as he let his magic run between his fingers.

"Now tell me everything," Magnus ordered as he crossed his legs ready to get his Alexander back.