Ever since realising the same guy plays Booth's grandfather and Gibb's dad, I have wanted to create a crossover between the two; I just needed somebody of interest to bring them together.

Everybody meet … Gisella Musetta Shepard … The love child of Jenny Shepard and Leroy Jethro Gibbs. (They knew each other long before becoming partners as NCIS agents.)

I know everybody bags out how Booth's dad was an alcoholic who abused him, so how about we say that was Jenny's life partner, for her children's sake, but being the kind of guys Jared and Seeley are, they changed their last name to Booth, to go with their stepdad because they had a kind of rocky relationship with Gibbs because of Jenny's feelings about Shannon.

This will be less about the actual crimes, though I will have them added in every so often, and more about the main relationship. I'm not all that awesome with climatic events and remembering all the details I need. I also don't do science and medical talk. If anyone who does wants to collaborate, and write a story, I have no problem with that. You can email me with all the details.

Cool, so I hope you enjoy the series. Hoping to make it a Trilogy, but if persuaded, I might do something else.

Keep in mind that I will NOT be consistent in amount of writing per chapter, and the point of view will change with each chapter.

Reviews are greatly encouraged.

Disclaimer: I do not own NCIS or Bones. The geniuses who thought of them did. If I had the current actors would not be there… I wouldn't have thought of them.

'Ziva, do you know McGee's medical history?' Ziva David nodded at Tony DiNozzo taking the clipboard being held by the receptionist.

'Give him a 5 mLs of morphine, put him on oxygen and somebody get me a coffee.' The MCR team looked up at the call for coffee.

'If I didn't know better, I'd swear she was related to you.' The red head passed agent Leroy Jethro Gibbs, who kept his eyes on her.

'That'd be because she is DiNozzo.' Gibbs made to follow before watching as she turned around.

'Doctor Shepard.' The MCRT team froze as the red head turned around and looked at the nurse holding the clipboard. 'There is an agent waiting for you in your office.' The red head smiled.

'I'll be there soon,' the nurse nodded and walked off, the red head noticed Gibbs staring at her. She lifted an eyebrow as she turned her body fully towards him. 'Tomorrow.' Gibbs nodded before turning back to his agents.

'Hurry Up.' He snapped before stalking towards the cafeteria.

'Agent Gibbs?' the MCR team looked up at the random agent standing near the bullpen. 'There is a female downstairs wanting to see you.'

'What did she say her name was?'

'Gisella;' Gibbs stood up and made his way towards the elevator.

'DiNozzo, David, McGee tell Abby and Ducky your invited to mine for dinner.' Gibbs said as the elevator doors closed.

'Well that was kind of random.' Tony DiNozzo said quipped before grabbing his bag and heading towards the elevator with Ziva David.

'He said Gisella, yes?'

'Why Ninja, you know her?' Ziva smiled as she looked at Tony.

'Know of, yes, know her?' the elevator doors opened welcoming them to the car park.

'Please finish that sentence.' Ziva smiled over her shoulder before walking towards her car.

'Come on Ziva you can't just leave me hanging…'Tony DiNozzo exclaimed when he finally pulled up in front of Leroy Jethro Gibbs' house. 'What do you know about her?' Ziva turned to him hand on her hips.

'Let me just say we both know her mother and father, yes? And she knows my father.' And with that Ziva opened the front door, walking towards the kitchen.

'Boss, Ziva won't tell me what she knows.' Tony pouted as an unknown female walked into the kitchen smirking at the pout.

'Papa, Pops on the phone, he would like to talk to you.' There was silence as Ziva looked at the female in front of her. 'Shalom Ziva.'

'Shalom Gisella, how are you?' tony watched as both females greeted each other.

'Well and you?' Ziva shrugged before slipping into Hebrew.

'Do you know the truth?' Tony watched as Gisella nodded.

'I got a special invitation to my own fiancé's funeral. I was there. Of course I know.' There was silence as somebody knocked on the door. Ziva turned around leaving the room to answer the door.

'So Ziva said I knew your mother, can you tell me how?' Gisella looked at Tony with a small smile.

'My mother was Jennifer Shepard.'

'Why is the FBI here?' Ziva called before a small body impacted with Gisella's leg. She quickly squatted with a massive smile on her face.

'Hey Parker, I can't believe how big you are!' the little blonde kid smiled as a male and female walked into the room. 'Seels, good to see you!' the male standing in front of Tony smiled.

'Glad to see you staying back in America for more than a week.'

'Seeley, watch it.' Gibbs said as he walked into the room.

'Sorry Dad, just really happy to see my sister again.' At that a female coughed slightly. 'Ah, Gisella, remember Temperance,' the two women hugged as Ducky walked into the room.

'Welcome back Ella!' Everybody seemed to know the female standing in the middle of the room. Everybody but Tony DiNozzo.

'Ducks!'

'Will somebody please tell me what is going on!' there was silence as Gibbs nodded.

'Abs and McGee.' At that Gisella turned back to Seeley, Parker in her arms.

'So where's Jared?'

'Jenny and I had a thing before Sharon. And we have three kids because of it. Seeley and then twins, Gisella and Jared. I proposed to Jen but she knocked me back, and I ended up marrying Sharon and having Kelly with her. Gisella has done everything you can think of even a small stint with Mossad because of her mother's connection.' There was silence as Gisella muttered something under her breath in Hebrew; Ziva muttered the same thing causing Gibbs to lift an eyebrow. 'Gisella, something you would like to share with the table?'

'Now is not really the right time.'

'Gisella,' his voice had a warning tone in it.

'I've actually never told you this, but I used to be engaged.'

'Used to?' everybody watched as Gisella nodded.

'Yeah, he's dead now. Did you know you actually knew him?' there was silence as Ziva looked up from her hands with a sad smile.

'Who?' Gisella closed her eyes trying to say the name. Ziva just looked at Gibbs with the small smile. 'Ari?' she nodded causing just about everybody's forks to drop to the table. 'How did you get out of Mossad alive?'

'Ari, asked for me too. He told Eli that we wanted to start a family, we were meant to get married twenty weeks after the date of his death.'

'Why did you never tell me?

'Ari took the liaison position to meet you and get to know you. He knew we were estranged in a way and he wanted you to be my wedding gift.' There was silence before Seeley's phone went off.

'Sorry Ells, duty calls.' Gisella nodded and smiled softly as Parker pouted.

'Leave Parker, I'd love to spend the rest of the day with him.' There was a round of hugs given out as Seeley Booth and Temperance Brennan left.

'So Gisella, what exactly do you do now?' there was silence as Gisella looked at her watch

'I work for the secret service, I was undercover as a temporary doctor at Bethesda because the director of the secret service needed to have a secret operation.'

'You were engaged to Ari Haswari?' Gisella looked up from the game she was playing with Parker and looked at her father and Ducky.

'Are we really going to have this conversation again?' neither of them blinked as Gisella sighed and gave Parker her phone. 'You can play some games if you would like Parker. Yes I was engaged to him, is there an issue?'

'Did you know that he tried to kill your father?' Gisella nodded at Ducky's question.

'I also know the truth behind his death, as well as the location of the bodies that sent Ari on the Hamas mission.'

'Do you mean Eli?'

'No, his Hamas buddies.'

'What do you mean you know where they are?'

'I went on a very secret mission, and killed all of them, before playing the every dutiful fiancée when I was invited to their funeral and watched as they were lowered into the ground.'

'How were the bodies buried?'

'I killed the bodies, and left them in their houses.' Gisella shrugged before looking at Parker. 'Dad, don't make me do this.' She whispered.

'Gisella, you need to.'

'Why?'

'Because this could change a lot of things.'

'You don't have clearance. Ziva doesn't even have clearance. There is only one person who does.'

'Eli David?' again she nodded once before looking away.

'Not even my new director has clearance.'

'New director?'

'Director of the International sector,' Gisella snapped. He nodded as did Ducky before looking at Parker. 'Dad I really loved him. And he really loved me. He killed a guy for even looking at me the wrong way. He allowed me to develop a relationship with his entire family.' She took a deep breath. 'I am not talking about this anymore.'

'Giselle.'

'No Papa!' Gisella gestured for Parker to follow her towards her car. 'I am not talking about this anymore!' she opened the door and watched as Parker did up his seatbelt in the back.

'Where are you going?'

'Rebecca's, Seals, asked me to drop Parker off for him.' Gibbs nodded before throwing Gisella a pair of keys.

'Come over any time you want.' A tight smile was his only response before Gisella pulled out of his drive way.

'Jethro, why were you interrogating your one daughter. She deserves more than that, considering you haven't seen her in ten years.'

'I don't know any other way to talk to anyone close to me.'

'Not since Jen…'

'I know.' Gibbs snapped, interrupting Ducky. 'Duck, I really want this to work out. We use to have the tightest father daughter relationship out of all her friends at school. Now we can hardly stand to be in the same room at the same time.'

'Because you are on uneven ground. Sit down and talk. Let her make boundaries and you can make boundaries. Mossad will probably be one of her boundaries. You need to be patient Jethro.'

'I can't believe we have a new FBI team to break in.' Tony groaned to Ziva.

'That is what happens when an agent retires, yes?'

'And what are we going to do when Gibbs retires?' there was silence as Ziva looked away.

'Gibbs is never going to retire Anthony.' Snapped a very angry Goth 'He is superman!' Timothy McGee and Ziva snorted slightly at the seriousness of Abby's voice.

'He is not Superman Abby. He got blown up.'

'Have you ever seen him in pain from a bullet wound?'

'I have never seen him get shot,' Ziva stated before frowning. 'Then again, he could have the same thing as Gisella.'

'What are you talking about Ninja?'

'Nothing.'

'Ah, so this is NCIS?' came a very familiar voice.

'Seeley Booth, I didn't realise that you were going to be coming here?' Abby stated with a smile.

'Well, Miss Sciuto, I am the new FBI inter-relations team, I was been promoted. Having it made known that Agent Leroy Jethro Gibbs is your actual father, makes that all the more easier to come by.' Though the words sounded thrilled, the tone did not.

'What is wrong with that?'

'I would rather come by promotions without my father's influence.' He answered as Abby gasped.

'Wait, does this mean I might have the chance of working with Doctor Brennan?' Seeley nodded before his phone rung.

'Booth,' as he walked off for a little bit of privacy Gibbs entered the bullpen.

'What have you got?'

'An international security issue,' Ziva said straight away, crossing her arms as she walked over to the plasma.

'Ah, FBI just called, the real identity of the third marine has been made clear. Secret Service agent.' Seeley said as he shut his phone.

'Well, who do we know in the Secret Service?'

'She won't help, not until she and Dad figure stuff out.'

'So what, I call…' Seeley nodded slightly.

'DiNozzo, call the Deputy Director of the Secret Service, he will send an agent over.'

'Slacks, I thought you were FBI?' Agent DiNozzo said as he walked back into the bullpen twenty minutes later.

'Secret Service, Fornell finally gave me the transfer I wanted when he retired.'

'So do you work with Giselle?' Slacks smirked slightly.

'Everybody there is scared off her. You can definitely tell that she is Gibb's daughter. So what is the case?'

'DiNozzo, fill him in later, we've got another dead body.'