a/n: wow. I cannot tell you how overwhelmed I am by the response to this story! It spurred me to write another chapter really quickly. Honestly I am not 100% sure where I am going with this story. I could go down the classic tiva path or I could try a case file to do with Dan (marias husband) that Mia somehow is involved in it I could just do stand alone chapters of the team and Mia :)

I want to know what you readers think :) so please review or pm me with your views :D hope you enjoy...

NCIS – Abby's Lab

Abby cheerfully smiled back before turning to look at Tony curiously, that smile was way too familiar.

"Abby" said Tony with a deep breath, "meet Mia - Mia DiNozzo".

The music continued to play but the air in the room was completely still as Abby processed what Tony had just said.

Slowly Abby's look of confusion turned into a small smile.

"How old is she" Abby asked quietly, her brain whirring as she tried to convince herself she wasn't dreaming.

"I'm six and one quarter" said Mia confidently holding up six short fingers proudly.

"Wow" said Abby feigning an impressed expression, "how come I've never seen you before" she said with a smile at Mia before sending a glare in Tony's direction clearly showing that the questions was sent towards him.

"I'm a secret" said Mia loudly as Tony rolled his eyes.

"Why on Earth would Tony keep someone as pretty as you a secret?" asked Abby quietly, speaking to the pair equally now.

This time Mia had no answer for Abby so turned to look up at Tony expectantly.

"Well… I don't know" stuttered Tony, flattering under the gazes of the two seemingly scary girls in front; he'd rather face a street take down than Abby and Mia aright now!

"Anyways" said Tony, changing the subject, "I need you to look after Mia for a while so I can finish off upstairs, things have become a little… complicated" he trailed off glancing Abby to see her reaction.

"Where's her mom" Abby asked confusedly, not noticing how both Tony and Mia's faces crumbled slightly at her words.

"She's with Kate, Abby" Tony said quietly wrapping his arm around his daughter and pulling her in close.

Abby understood and her expression of shock quickly turned into one of sadness.

"So you need me to keep Mia company?" asked Abby, flicking an imaginary switch to put a bright smile on her face, a show of happiness just for Mia.

Tony nodded and pushed Mia forward to stand next to Abby.

"See you guys later then" he said waving jovially at the two girls left in the lab, both looking a little lost, "Oh and by the way Abby" he added in a dramatic stage whisper, childishly putting a finger over his mouth "she's a secret."

NCIS – Bullpen

"Ah Tony is back" cried Ziva s Tony tried to sneak back to his desk as quietly as possible.

"Where did you go Tony" McGee asked curiously, watching Tony to see if he could pick up any clues as to why the agent had left so suddenly.

"Yeah DiNozzo" said Gibbs, striding past and delivering a swift "thwack" to the back of the head, "where did you go".

"And who's Maria" added Ziva.

"or Mia?" asked McGee, drawing a glare from Tony.

"er, Ex girlfriend, you know" Tony stuttered, struggling for words in a very un-Tonyish way, "gone a bit crazy after I ended it" Tony continued gaining momentum with every word. "Well actually McSingle" he added with a mischievous DiNozzo grin, "you probably don't" he finished with a chuckle ignoring McGee's affronted expression.

"And that took you ten minutes did it?" Ziva asked disbelievingly, not wholly convinced by Tony's story.

"I went to see Abby", Tony replied with a confident smile, "you can call her and check if you don't believe me" he finished smugly, picking up his finished case report and walking over to deposit it on Gibbs' desk.

"Whatever DiNozzo" Gibbs said nonchalantly flicking absentmindedly through Tony's report, "go down visit Ducky and see if the autopsy report is finished".

"On it boss" Tony said heading towards the elevator happily, while he was down there he could check on Mia and make sure Abby was coping alright with his bored 6 year old.

Suddenly he heard footsteps behind him and quickly spun around to see McGee standing behind him.

"I've got to see Abby so I thought I'd come down with you" said McGee, not noticing Tony's dismayed expression.

Tony didn't say a word as the pair stepped into the elevator; in fact he was lost in thoughts of what to tell McGee when he saw Mia. He was going to tell McGee but not now. Not yet.

As the pair disappeared between the grey doors of the elevator, Ziva turned to Gibbs and began to speak.

"I do not believe Tony is being truthful" stated Ziva bluntly, "he would not have looked that upset over an ex-girlfriend, something does not calculate up".

"Add up Ziva" murmured Gibbs with a hint of amusement in his voice, "I wouldn't worry about it though Ziva, lots of things about DiNozzo don't add up".

NCIS – Abby's Lab

Palmer and Ducky hadn't quite finished the autopsy report so McGee and Tony quickly headed to visit Abby.

As they walked in the first thing that struck Tony was the noise, the music that normally sent tremors through the basement had been turned off and the air was filled with the sounds of Mia's animated voice and Abby's uncontrollable laughter. Tony's face broke into a beaming smile.

"Tony, McGee" Abby squealed, skipping over to engulf the pair in a bone-crushing hug. "McGee meet Mia, Mia meet McGee".

McGee awkwardly stuck his hand out to shake hands with the unimpressed six year old standing infront of him. Mia reluctantly shook his hand before pointing at herself and introducing herself once again.

"Mia" she said proudly puffing out her chest.

"I'm Tim" McGee replied, still confused at who this girl was and why she looked so familiar.

"You can call him Timmy though" interrupted Tony loydly, "or Probie, or McGoo or anything really, he doesn't really mind does he McLovable" Tony said, jovially clapping a hand on Tim's shoulder.

Abby then noticed that McGee was wondering who Mia was and realized that now was the chance to explain before he asked her something she couldn't answer.

"Mia is my friend's daughter" Abby said confidently, acknowledging the thankful look that Tony shot her. Tony wad subconsciously edging closer to Mia so that he could stand next to her. "There was a complication so she's staying with me for a bit! Isn't that great!" she finished with a bright smile.

McGee looked significantly less puzzled until a look of confusement crossed his face again.

"Wait is this the same Mia Tony was talking about on the phone" he asked curiously, glancing across at Tony.

"Nah it's just a popular name" Tony said as convincingly as he could hoping McGee would let it slide. Thankfully McGee looked convinced and Tony let out a silent sigh of relief.

"So do you want to see what me and Mia have been upto?" Abby asked excitedly. Pulling Tony and McGee over to a large desk.

"We've had a really cool time Tony" cried Mia happily, suppressing a giggle at the fact she was calling her dad Tony. "We made patterns out of fingerprints and took goofy pictures of ourselves for the plasma thingy" Mia gushed, glancing up at the screen which showcased a huge picture of Abby and Mia pulling funny faces together. "It was spl-en-did" she continued, drawing out her favourite word, "and, also Tony, Abbys gonna do my hair in pigtails now" she finished, her brown eyes sparkling as she grinned at Abby, "Abbys ace!".

Tony simply beamed back at Mia, it looked like Mia and Abby were already best buds.