A/N: This is a cross-over fic for Harry Potter and NCIS LA. A lot of the fics I saw were Deeks with female Harry, so I thought I would do someting else. I messed up the timeline quite a bit. Officially Harry Potter doesn't play at the same time as NCIS LA, but here it does. For NCIS this is set after season six. For HArry Potter the timeline is even more messed up. After the death of Dumbledore another year has gone by before anything happened. So Harry, Ron and Hermione have all gaduated from Hogswarts here.

I'm sorry for any mistakes.

Disclaimer: I own nothing.

Chapter one

"Harry, Harry!" Hermione said as she came racing down the stairs at Grimmault Place twelve. They had moved in there not so long ago. A lot of people from the Order were moving in. The house was very full now. Everyone had decided that Harry should be in charge of everything. He was the only one who could destroy Voldemort after all. It took some time to convince Harry, but now he was okay with it.

"What is it Hermione?" Harry asked. "Well at the meeting yesterday everyone agreed that we should look at the muggle way of doing things, right?" "Yes, that's true, what did you came up with?" "We should ask my grandfather for help!" "Your grandfather?" "Yes, listen he is a"

Meanwhile in Los Angeles

"Deeks quit that!" Kensi yelled across the bullpen. "What did I do, princess?" "Ugh, don't call me princess and you were ticking with your pen." "Okay, okay I'll quit that."

"What do you thin Granger is doing on the phone?" Callen asked. "What do you mean?" Sam wondered. "Well, I passed him on my way back from the shooting range and he called the person on the phone sweetie, not to mention he's been calling for about half an hour now." "Sweetie? Does Granger have a girlfriend?" Deeks asked. "Don't give me thoughts Deeks." Sam said. "I hope we know it soon."

"Team, all up in OSP." Granger said. "Yes a case." Callen said "this day of paperwork was getting boring." They walked up the stairs, but as soon as they were inside Granger started talking.

"Team, we are going to the UK, You are officially on a leave since this is outside NCIS, but my granddaughter and her friends need our help by saving the world."

This raised a lot of questions, such as: Granger has a granddaughter? Saving the world? The UK?

Granger putted his hands in the air. "I know you all have a lot of questions, but our plane leaves in four hours so go home pack your stuff and we will meet at the airport. Pack for a long trip. We may be gone a year." Everyone looked like they wanted to ask something, but they didn't, knowing they would eventually get answers.

In London

"Where are we going now, Assistant Director?" "Please call me Owen, we aren't at work now. And my granddaughter said she would send someone to take us to where she is." "Hermione's granddad?" A man with a wooden leg and a strange fake eye walked to them. "I'm Alastor Moody, Harry has assigned me to bring you to the headquarters. If everyone would please touch this." This was a strange piece of clothing. It looked like some kind of dress. "Now please we leave in one minute." Sam and Callen looked at each other, they shrugged and touched the dress. Kensi and Deeks followed them and Granger was already touching in. Hetty looked like she didn't know what was happening. 'Well that's a first' Granger thought. Nell and Eric decided to just go along. When everyone was finally touching the dress they felt a pull behind their navels. It was a strange feeling and not much later they lay in one big hope in front of a couple of houses.

"What was that?" Deeks asked. "No time to explain." Moody said. Read this, he gave them a piece of parchment. 'Parchment, really?' Deeks thought, but he read nevertheless. On the paper stood something about the Order of the Phoenix and Grimmault place twelve. "Good, now come with me, Harry is waiting for you." And with that he led them to a small place between two houses. It looked like he opened a door. He stepped through and disappeared. "Are you coming?" They heard him say. They quickly followed him and stood in the hallway of an old fashioned house.

"Thank you Moody, I'll take it from here." A young boy said. "Hello, welcome at Grimmault place twelve. I'm Harry Potter you must be Hermione's granddad." He said to Granger, who nodded. "A pleasure to meet you sir, I'll send her down soon, first some other things has to be done. How many rooms do you need?" "At the minimum five." Granger said. "Oh thanks Merlin, I was afraid everyone would need a separate room. Fred George!" He called. Two identical red-haired boys appeared behind him with a loud pop. "You don't have to do that every time you know?" Harry said. "Okay our dear" "brother-in-law" the twins said, the one finishing the other's sentences. 'Brother-in-law? How old it that kid?' Callen thought. Sam thought something similar. "Can you please make five rooms ready and I'm your only brother-in-law so it's not difficult to be the favourite." "We know Harry" "We will go" "And get five rooms ready." And the boys disappeared again.

"Kreacher!" Harry called. A small green creature appeared in front of them. "Take their luggage to their rooms." "Yes, Master Harry." The creature took their luggage and disappeared again.

At that moment a beautiful girl with red hair came walking down the stairs. "Harry, they are here already. Never knew that those airoplanes are so quick." "It's airplanes Ginny." And he kissed her. 'Okay, I have found his wife.' Kensi thought. "Have you seen Remus and Tonks recently?" Harry asked Ginny. "Yes, Tonks was convincing Remus that a strange noise was coming from a cupboard." She said. Harry and Ginny exchanged glances that the rest didn't really understand. "Merlin, they are married, I thought they would stop snogging in cupboards now. Whose time is it to interrupt them?" "It is your own time dear." Ginny said giggling. "Okay, I'll go in a moment, is Hermione in the library?" "Yes with Ron." Harry groaned. "Amazing, know I have to interrupt my uncle and his wife and my brother and sister in law." "Sister-in-law? Hermione is married?" Granger asked. "Oops, way to ruin the surprise, but yeah. Every marriage the last summer went quick out fear for Death-Eater attacks. I'll go and interrupt now. Can you show them to the kitchen Gin?" "Will do, a lot of luck!"

"Hello, my name is Ginny Potter, but you had already guessed that I think. I imagine Harry forgot to ask for your names?" Everyone nodded. Nell was the first one to come. "Hey, I'm Nell Jones and this is Eric Beale, we are the tech operators." "Tech? Don't let my dad hear you, he's crazy about electricity. We will have to find a way to let your devices work then, because most electricity doesn't work here." "What are you for kind of people? I'm curious." "We will explain at the meeting." At this moment Hetty interrupted "Can we get that explanation now?" "I'm sorry we can't." Ginny said "If we do it at the meeting, you all have to explain only once. And I'm not really the person to explain."

"Mistress Ginny?" another creature stood behind her. "Yes Dobby?" "You mom wanted me to let you know the meeting can begin in ten." "Thank you Dobby." "Why does it call you Mistress? I'm Marty Deeks by the way, but call me Deeks everyone does. And this is my beautiful girlfriend Kensi Blye. Don't get on her bad side, she can kick your ass before you know." "I don't think so." Ginny said with a mischievous smile. "But, Dobby calls me Mistress because Harry is his master and as Harry's wife I'm his Mistress. And who are the last three in your company?" "I'm G Callen and this is Sam Hanna, how old are you exactly?" "I'm seventeen, and before you can say I'm underage we come of age when we are seventeen so I'm an adult." "You're still quite young Mrs. Potter, I am Henrietta Lange." Hetty said. "It's a pleasure to meet you all. Before we go further I'd like to warn you, Harry is in charge of the Order of the Phoenix. And before you say he's too young. He has survived things no one has done before. And he kicked the asses of Tonks, Moody and Kingsley at the same time. They are aurors, your equivalents." Kensi gasped "Really, I would like to go up to him once." "Your style of fighting is different. You would win in the end because Harry doesn't have a fair change. He hasn't learned material arts or something. He has only learned to dodge. You should see him train once. But enough for now. The meeting will start soon.