Hi everyone. I'm back with a new story but this time it is slightly different.

This story is co-written with a good friend of mine. She helped me with ideas and plots for my other story An Adolescent Alliance but this time she joined me writing adding one of her own characters into the mix.

Like my other story An Adolescent Alliance this story is a three way crossover between Bones, Castle and NCIS. I would say though that NCIS holds center point.

It is based off of characters from my other stories linking them together including the characters I created; the children. Plus my good friend's own character from her story. It isn't mandatory that you have read the other stories but to understand everything I would advise it. The stories are:

NCIS: Out To Get You and Family Blood Ties (Most Important)

My friend: Miss Ziva Beckett's NCIS story: Ghosts From The Past (Introduces the new character)

Castle: Her Secret Life No More

Bones: The Daughter In The Danger and The Daughter's Déjà vu

Due to us both having NCIS stories we mostly centre the story around them and their children.

Really hope you like it, would love some feedback.

To the real Livie: thanks for all your help writing this story, it has been a pleasure writing this with you, without your help, it wouldn't be possible. I hope there are many more to come because I feel we have started something amazing.

Chapter 1

Ziva quickly slipped through the crowds of people standing in front of the arrivals gate as she heard the overhead speaker announcing the arrival of the flight from New York.

She arrived at the front just as the doors opened and she eagerly scanned the sea of faces for the one she wanted to see. As she did so, she allowed her mind to wonder slightly. She thought about what was happening at NCIS and how they were going to explain everything. She brushed her hair out of her face as she sidestepped a large suitcase before she let out a gasp of surprise as she felt arms wrap around her from behind and a very familiar giggle echoed in her ear. "Wow I think your ninja skills are slacking mom" came a cheeky voice and Ziva laughed as she spun round to see a very familiar girl standing behind her; a girl with wild dark brown hair naturally colored with lighter streaks and bright cheeky glinting greenie gold eyes, carbon copies of her father's.

"Tali" she exclaimed in delight and she instantly gathered her daughter up into her arms hugging her tightly as Tali dropped her bag and hugged her back. Ziva smiled happily as they stood there hugging each other before she kissed the top of Tali's head, "oh I have missed you tateleh" she murmured and Tali pulled away to grin at her "missed you too ima" she said.

Ziva studied her carefully "you have a tan" she said and Tali laughed "yeah the Hamptons are sooo nice, Livie and I spent ages sunbathing" Ziva grinned before she wrapped an arm around her daughter "come on then" she said "I want to hear everything"

"Mom I told you most of what happened when we talked on the phone" Tali said as she grabbed her bag and they headed out of the airport towards the parking lot "ah yes but it isn't the same" Ziva said with a smile and Tali rolled her eyes.

"Where's dad" she asked "and AJ, I cant wait to see how much he as grown" "you wont recognize him" Ziva told her, referring to her one and a half year old son Aiden Jethro, more commonly known as AJ. "He is at day care my love and your father is at work, he is trying to finish his paperwork so that we can head home early tonight" "yay" Tali said with a grin and Ziva smiled as they arrived at the car and placed Tali's suitcase in the boot before they scrambled in and Ziva gunned the engine and sped out of the car park.

"So how is everyone else" Tali asked "Gibbs, Abby, McGee" she was surprised to see her mom hesitate slightly when she mentioned McGee's name "they are all fine" she said quickly "they are all looking forward to seeing you… and they have lots to tell you"

"Really" Tali said warily "like what". Her mom looked at her and smiled "I'll let them tell you" she said before she changed the subject "so what else did you do in the Hamptons aside from sunbathing". Tali eyed her but hesitantly accepted the change and began to tell her about her time away.

XO

Tali looked at her mom as they rode the elevator up to their floor of NCIS, she had been away for three weeks in New York with a friend of hers, Livie Beckett. Her mom and dad had been really busy at work after a huge serial killer case had come in and when Livie had heard, she had invited her up to New York for a bit. It had been nice to get away and visit Livie, a friend she had met through McGee when he had introduced her to her stepfather - the crime novelist Richard Castle - whom he had met at a writer's dinner. She and Livie had hit it off quickly and when her parents had been knee deep in cases and Livie had invited her up for a bit, her parents had been willing to let her go realizing it might be better for her. She had enjoyed herself but was eager to settle back into her normal life again.

She looked at her mom who was standing very quietly "mom is everything OK" she asked. Ziva looked at her "um yes" she said with a small smile "though we do have something to tell you about… well Tim does" Tali raised an eyebrow 'Tim' she thought quizzically, usually everyone went by their surnames.

The doors to the elevator opened then and with a smile she leapt out. "Dad" she said spotting him sitting at his desk tossing a ball up and down. He looked over and a huge grin spread across his face "hey there's my ninja" he said leaping up and moving round his desk to scoop her up into a big bear hug "ah missed you princess" he murmured. She grinned hugging him tightly back resting her head into the curve of his neck "missed you too daddy" she mumbled, he kissed the top of her head before releasing her and she turned.

"Hiya Gibbs" she said grinning "hey shortcake" he said pulling her into a hug "how was New York" she grinned "busy" she said, before turning. "So Tim mom says that you…" she trailed off in surprise staring at McGee who looked really worried and really uncertain, and she also stared at the person standing next to him.

Standing in front of the big monitor staring back at her was a girl, older than she, maybe around fifteen, with dark brown hair with lighter tints that was tied up in a messy ponytail, prominent facial features and cautious green eyes which stared at Tali. She was tall and slender, her arms were folded over her chest and she narrowed her eyes at Tali as she chewed her lip as though sizing her up.

Tali blinked in shock uncertain of how to react; as she took the girl in she straightened up uncertainly, defensive about this strange new person's hostility towards her, she too crossed her arms and eyeballed her.

They both stood there almost glaring at each other, sizing each other up. Tali felt confused, who was this girl, standing in their bullpen as if she owned it? She hardened her gaze at the girl, trying to make it clear that this was their bullpen, but the girl glared back almost possessively. To the side she heard her dad mutter "is it just me or did the temperature drop considerably suddenly"

"Tali" Gibbs said and there was a firm edge to his voice, slowly Tali looked away from the girl to him. He gave her a look "Tali this is Blair McGee… Blair this is Talia DiNozzo whom you have heard about" the other girl, Blair nodded not taking her eyes off of Tali. "How come I haven't heard about her" Tali asked glancing around, then she stopped "wait a minute Blair… McGee did you say" she looked at McGee still sitting at his desk "I thought your sister was called Sarah".

McGee gulped "um yes my sister is called Sarah but um Blair isn't my sister" he glanced at Blair "um Blair is my …um… she's my daughter"

Tali blinked and stared at him waiting for him to laugh and tell her it was a joke, but he still looked at her uncertainly. "Um" she managed "she's your… what now"? "I'm his daughter" Blair said stiffly and Tali looked back at her before she looked back at McGee. "Seriously I visit my friends for three weeks and in that time you got a daughter huh really confused" she spun round to face her parents "um what" she asked. Her dad shrugged "yeah we were just as shocked as you but we tested it and it's true, Blair is McProbie's daughter"

"Huh" Tali said turning back to Blair who was still eying her stiffly. "Blair" McGee muttered "cool it, Tali is fine; I have known her since she was a baby". Blair's jaw clenched slightly and her eyes flickered to McGee before she looked back at Tali, then she abruptly stormed out of the bullpen and disappeared down the stairs.

Tali spun round to look at her parents "so when I asked you 'what's new' on the phone you didn't think that telling me that McGee has a daughter is something new I needed to know about"

"We didn't know how to tell you on the phone" Tony said uncertainly "I mean would you have believed us". Tali thought "I dunno" she said "I mean how did you find her". The team explained how Blair had turned up in the bullpen late one night and after a while had confessed to them that she was McGee's daughter. They had accepted her in once they had learned about her foster homes. Once they were done, Tali stood there quietly before she nodded. "Is there a reason that she doesn't like me" she asked, they all shrugged.

"She is quite a secretive girl" Gibbs said "she has been through a lot without anyone to trust, I would guess she came here and for the first time felt safe and loved, then all of a sudden you show up and she realizes she has to share everything here with someone who is already used to being here" he looked at McGee "and I don't think mentioning that you had known Tali since she was a baby was such a good idea, I think she got a bit jealous"

McGee nodded sadly "yeah I know, but I am still not sure about this parenting thing, now I have a frosty teenage to deal with who doesn't like Tali" "go talk to her Tim" Ziva said softly "you are her father" Tim looked uncertain but slowly nodded and headed towards the stairs after Blair.

Once he had disappeared Tali looked around "anything else I should know" she asked "Abby have an evil twin". Gibbs cracked a smile "no Blair is the only new person, you should go see Abby though she was very excited about seeing you, that probably annoyed Blair a bit too". Tali nodded "I'll go down now" she said "maybe when I get back I can try and smooth things over with Blair cus I take it she is staying" she looked around "Tim filed for adoption papers" her mom said "but they are still processing it and running checks" Tali nodded and grinned at them "see you later then" she said and disappeared towards the elevator that would take her to Abby's lab.

Once she had disappeared from sight Tony looked at his boss and wife "well um, that went well" he said. They both just looked back at him worried. Blair and Tali were both very strong and stubborn girls, protective of what they had and very careful about whom they trusted. They had expected a bit of friction between the two of them but not this much. They had hoped the two of them would get close but it appeared that Blair did not want to share this new life she had with anyone else, whilst Tali had been away they had all pretty much treated her how they treated Tali.

Now Tali was back and that affection would have to be shared between the two of them and Blair wasn't happy about that. Tali might be OK with it but she didn't seem to like the idea of allowing her in, especially with all the frosty treatment she had been receiving. She had responded to that treatment in a way that was natural to her, cautiously and just as harshly, firing it back at her in an attempt to portray herself as equal. She was two years younger than Blair and she wasn't going to let Blair become dominant over her because of her age.

Tony sighed "this is going to be a long week if Tali and Blair didn't sort this out quickly" he said and Tony and Ziva nodded, "the problem is" Gibbs said "which one will be the one willing to step down from their high horse and offer peace" Tony sighed and ran his hand through his hair. Ziva looked at him confused "high horse" she asked "Blair doesn't have a horse and neither does Tali" "um it's a saying" Tony said as he headed back to his desk "I'll explain later"…

XO

Tim moved down the stairs, not extremely quickly, he needed time to figure out how to address his daughter. Honestly, he'd expected Blair and Tali to get on well, and in time, be the best of friends. Obviously it was going to be a lot harder than first thought. Pausing at the top of the next flight of stairs, he looked down to see Blair sitting at the bottom the steps. She must of heard him approaching as she glanced up as he neared her.

She moved over slightly, as he sat next to her, she didn't say anything to start with, thinking about her words. "I don't know if this is gonna work, Tim" she said with a quiet sigh, looking down at her hands. "You haven't even given it a try Blair. You don't even know the girl yet." He replied, trying to get her attention. Still refusing to look at him she muttered, "I just don't like her." He could tell she was frustrated. "Why?" He asked, and her head finally came up, "She has everything, I don't." She said simply. "You know that's not true." Blair shook her head, and played with the sleeve of her top, "What I have isn't permanent. I know that, and all you guys should too."

Tim thought about that for a moment, he knew that it could be possible for the adoption to fall through, none of them were thinking that though, or voicing the negatives of the situation. "Yeah, that's true. I guess that it might not work out, but that's only a small possibility. It's more likely to happen Blair; we all know that, that's why we haven't said anything about it." She nodded her head, still not really believing him. "Whatever" she mumbled. He caught hold of her eye before speaking again, "You promise you'll try get on with Tali then"

She shrugged in a blasé way, "Fine." He smiled, "Thank you." At that, Blair shrugged again, "Not much else I can do right" She stood and he copied her, "How about we go down see Abby" He asked and she gave a small nod, a small smile returning on her face, then it dropped, "She'll be there though." He rolled his eyes, "What did you just say Blair, you said you'd try to get on with her." Blair pulled a face. "Ugh, fine. Let's go then." She said, forcing a smile on her face as they continued down the stairs.

XO

Tali exited the elevator and headed into Abby's lab and was greeted as usual by the loud music. Abby was standing with her back to her talking to Palmer and Ducky who were listening intently, then Ducky spotted her and smiled "Abby" he said "there is someone who wants to see you"

Abby spun round and a huge beam split across her face "Tali" she squealed "you're back" Tali laughed and hugged Abby as she leapt at her. "Hey Abs" she said "how's it going" "aw you know me, happy as long as I have my forensics, my team and a CaffPow" the scientist said "so how about you, how was New York, meet any guys" "Abby" Tali laughed "I'm 13 years old". Abby grinned "yeah but I have seen you with your lover boy Amir" Tali rolled her eyes "he is just a friend" she said grinning then she turned "hey Ducky, Palmer how's is going, don't often see you two this high up" "ah definitely your father's daughter ay miss Tali" Ducky said moving forward to hug her and she giggled as she hugged him and Palmer back.

"So um has Timmy told you his news" Abby asked hesitantly. Tali nodded "well he didn't tell me, she was just standing there giving me the cold treatment when I walked in, but they explained it all" "she is a nice kid Tali" Abby said softly "just a bit lost that is all". "Yeah well nice to everyone except me, seriously if looks could kill" Tali said "I don't think she likes me much" "give it time" Ducky said "the poor girl isn't sure who she can trust" Tali nodded slowly.

At that moment McGee appeared in the doorway with Blair right behind him looking slightly happier until she spotted Tali sitting on the stool and she frowned again. Slowly Tali slipped off the stool, she didn't want to make it look like she was possessing everything here, but she also didn't want to let Blair think she could walk all over her. "Hi Blair" Abby said "I hear you have already met Tali" Blair nodded stiffly before looking at Abby "hey will you still show me how to use the mass spectrometer tomorrow Abby" she asked. Abby nodded eagerly "of course, Tali are you going to join us" she asked obviously looking for a way to ease the tension between the two of them and Blair visibly tensed. Tali smiled "no it's good" she said "I already know how to use it so I'll let Blair learn, plus I need to start using the gym again, I was slacking in New York" Blair rolled her eyes, but looked happier that Tali wasn't going to be interfering.

Abby nodded and looked at the clock "well I think it is time to shut my babies down and head home" she said, McGee nodded "yeah your parents are packing up upstairs Tali and Blair we should head home". Both girls nodded and followed him into the elevator. Tim stood behind as they stood in front of him at opposite ends of the elevator. It was surprising how much distance you could get in such a small box. The tension in the elevator was so thick you could cut it with a knife and he felt very uncomfortable, neither of the girls did anything, they just stood there and refused to look at each other. He was relieved when they arrived at their floor and they both leapt out, he sighed 'this was going to be a long week' he thought.

Hope you liked it – If you have any questions please don't hesitate to inbox me and I will answer as best I can.

Please review. We would love to hear what you think. We would also love tips, ideas and advice

Thanks

Xx