AN: I don't not own anything Harry Potter or Mortal Instruments, sadly

Summary:

Hermione has a secret, one that is revealed when the war with Voldemort reaches it's most devastating time. And Hermione isn't the only one with a huge secret. All will be revealed when a security party from New York arrives at Hogwarts.

(No Clary - Ignoring events in the Mortal Instruments, just taking the characters and the lay out of the shadow world to Hogwarts.)


1. The arrival of the party.

They were sitting close at the edge of the black lake enjoying the last of the Autumn sun. The day had been warm and even Hermione hadn't felt like studying inside. Instead she had brought her books outside and worked on her homework sitting in the shade of a tree while the boys were throwing an old Quaffle around.

Every now and then her eyes would roam the grounds for something unusual. It was a habit drilled into her from early age. Slowly she scanned the grounds from the entrance of the castle to the gate. Everything was calm and quiet.

The Gryffindor's were close by enjoying the sun. They kept themselves to the area close to Hagrid's hut. At the far end of the grounds she saw Slytherin house unusually relaxed and between the two houses a mix of Puffs and Ravens. They acted like a border between the two rivalling houses.

Everything looked like it was supposed to be. Even Harry, who had become more and more depressed and brooding since the start of their fifth year was smiling about something Ron said. It was rare to see him smile these days. The guy was constantly worried about a possible attack or Sirius dying in a battle.

However with Voldemort on the lose you couldn't let your guard down for too long. To Hermione this felt like the quiet before the storm. Something was up and she wasn't sure what.

So far this year at Hogwarts had been alright. They had a competent teacher for defence. Dumbledore had managed to find an American Witch who had studied at Salem and got a lot of experience from the US Auror squad. Potions master Snape seemed to have relaxed his stance against the Gryffs a little. Which in itself was weird but Hermione knew why so she wasn't too bothered and so far, nothing strange inside the castle had happened.

Outside the castle was a different story. With Voldemort's return their world was at war. At first it seemed that the ministry would refuse Harry's story about the dark wizard's return but luckily, after a good shouting and arguing from Dumbledore and the brutal murder of a high ranking auror Fudge was forced to believe them.

And surprisingly Fudge turned out to be quite the competent minister. Immediately after finding the dark mark above the murder victim, the ministry had released a statement claiming that the wizarding world was preparing for war. The news article explained that extra measures were taken to ensure the safety of the ministry and the people of the magical world. The auror training program received an extra impulse of funds and the ministry was actively hiring wards-specialists and curse-breakers. Hogwarts would receive additional security as well. Which had not yet arrived but were expected to come before Halloween.

"Hermione!" Ron called and ran towards her. She looked up to see him skid to a halt next to her. "Look!" Ron said and pointed towards the gate. Her sharp eyes immediately picked up on a group of eight people entering the grounds.

"Do you think they are a part of the reinforcement?" Harry asked.

Hermione's eyes scanned the group. The two in front she immediately recognized.

"That's Sirius, Harry. And Remus." Hermione said and got up quickly. She would like to go and say hello to the two marauders but wasn't sure if she could. It had been a surprise move by Fudge and Amelia Bones when Sirius's name had been cleared of all charges just a week ago. They had informed the wizengamot that Sirius never really had a trial. As the head of an ancient house he was quickly asked to give a statement under veritaserum. Which, of course had cleared him from any of the allegations.

He was now a free man and had immediately picked up his old role as hitwizard for the auror squad. Amelia had promoted him to be a squad leader and trainer of those coming from the auror academy.

Hermione's eyes roamed over the other members of the group. Snape was with them as well. Besides the potions master there was a man dressed in a smart suit, greying hair and a hooked nose. Behind Snape was an adult man dressed in a dark purple trenchcoat, black with blue spiky hair, black boots that reached his knees and even from this distance Hermione could see he was all glitter and glamour. A grin formed on her face as she recognized both adults.

Then her eyes moved to the tree slightly smaller figures. A loud gasp escaped her as she recognized the golden hair. Without thought or decision to do so Hermione was running towards the group. Behind her she heard Harry and Ron shouting her name but she ignored them.

"Jace!" She called loudly as she ran. The golden haired boy looked up and smiled wildly at her.

"Hermione!" He called back and immediately ran to her.

Halfway they threw themselves at each other in a big hug. Happy tears were streaming down her face as his strong arms wrapped around her body. Familiarity washed over her as his scent reached her nose and the endless homesickness she had felt for so long left her body.

"Jace." She whispered. "God, I missed you."

"Of course you missed me. I'm too fabulous not to miss." He said arrogantly but she heard the longing and the happiness in his voice. She looked up at him, his golden eyes twinkling like mad and a smile that was only meant for her on his lips. She didn't even care that people were looking, she just pulled his head down and kissed him with all the emotions she had.

She only became aware of the people around her when she heard a familiar voice saying, "That's quite enough, young lady. No need to be inappropriate in the middle of the grounds."

She opened her eyes to see Severus Snape standing close by with something that could pass as a sneer on his face but he was failing completely. As Jace released her a little bit she saw Isabelle, Alec and Magnus standing next to Snape. On the other side were Sirius, Remus and Hodge. They were all shaking their head but smiling.

"Trust the two of you to give a show like that." Magnus said with a sigh.

"Aww, my brilliant warlock, I missed you too." Hermione said and pulled the man into a hug.

"Hey, none of that! I have a reputation to think off."

Hermione giggled and stepped away from him. She pulled her two friends into a hug before turning back to Jace. She was about to ask him why he was there when Harry and Ron finally caught up.

"Moine?" Ron asked with a strangled and hurt voice while Harry said a quick hello to Remus and Sirius.

While wrapped Jace's arms Hermione turned to Ron and smiled at him. It wasn't a friendly smile but a smile of compassion. She had been fully aware of Ron's growing affection for her. The jealousy had been clear on his face and in his actions during the ball when she took her long time friend Viktor Krum to the ball. After that Ron's attention for her had only grown. Maybe she should have put a stop to it sooner and told him about Jace but it had been difficult to start the conversation. Ron wasn't really open to a conversation about feelings and relationships.

"Uhm…" Hermione muttered, as she had no idea what to say.

"Hello, I'm Jace Herondale. You must be Ron Weasley." Jace said to save her but Ron completely ignored him and turned to glare at Hermione. She saw the jealousy crawl up in his mind.

"Who is he? He looks like Malfoy's cousin!" Ron snapped.

Hermione took a step back from the venom in Ron's voice. She wasn't sure what to do or to say. How was she going to explain to her best friends in Hogwarts that she had never been totally truthful with them? How was she to explain that she had hidden a very important side of her life from them? This time it was Sirius who saved them.

"These are the security support for Hogwarts." Sirius said loudly. Both Jace and Hermione turned to look at the man. "This is Hodge Starkweather, Magnus Bane, Jace Herondale, Isabelle Lightwood, and Alec Lightwood. Magnus is the high warlock of New York and the others are Shadow Hunters."

"Shadow Hunters?" Harry asked.

"Best not explain this out here." Snape said and nodded towards the other students who had gathered there.

"Yes, yes. Let's go find Albus." Hodge said.

Hermione wasn't about to let go of Jace and kept her hand firmly in his. Harry followed next to Sirius and Ron stalked along behind them.

Once inside the castle Jace wrapped his strong arm around her and pulled her closer.

"New York has been boring without you." He whispered. "You leave me in the boring institute while you are chasing around dangers in these splendid halls."

Hermione just chuckled and shook her head.

"Are you really going to stay here?" She asked.

"Yes, Hodge and Magnus couldn't say no to your father's request for aid. Magnus isn't going anywhere without Alec and I'm not going to leave my Parabatai alone. Nor am I going to leave my girl alone with those two, fighting off their ass's while I'm totally bored at the institute."

"So you made it a party." Hermione stated.

Around her most chuckled.

"Yes, you know me. Always in for a party."

"More like always finding a way to getting yourself killed." Alec stated.

"That's rude, Alec." Jace stated. "I do not try to get myself killed that often."

Alec muttered something about last week and Hermione glared at him and she wasn't the only one. Isabelle and Hodge both looked at Jace in various states of anger.

"It was nothing."

"A broken rib and a day bed rest due to blood loss just because you wanted to play with a demon doesn't count as nothing." Isabelle said with a sigh.

"Again." Hermione sighed. "What am I going to do with you?"

"At least now he is here. Hopefully you can keep your boyfriend in check." Magnus said. His face showed how unhappy he had been with Jace. Hermione hit Jace around the ears just to set him straight.

A very angry Ron and a very confused Harry closely followed the exchange. A few times Harry seemed to want to ask something but Remus told him to wait until they were safely in Albus's office. Ron just glared at everybody. Hermione half expected him to just turn and walk away but his curiosity seemed to be stronger than his anger.


Please let me know if this is worth to continue.