This is set somewhere in Season 2.

So this idea has been spinning around in my head for a while now and I've realised that until I at least get some of this written down, It Takes Two doesn't seem to be going anywhere. My mind only wants to imagine this story and not my other one. I will get back to it, I have so many ideas for it, I just can't seem to write them right now.

This is my first crossover story, ever. The Stargate SG1 characters won't be in this nearly as much as the Castle crew; I'm not very good at their characterisation and so they'll probably be OCC, my only attempt at a sg1 fic was disastrous.

Suitable for all.

The true meaning of family is discovered as a chance meeting with SG1 and an ancient artefact lead the crime solving friends into an unbelievable few days. How will they cope when their lives are changed forever?

I don't own Castle or Stargate. I do love them both.

This was written while under the influence of an energy drink, while possibly accountable for written mistakes and insanity I am sure you will still find at least some moments of enjoyment from this.

Enjoy!

"Castle, stay in the car, just this once. I will come and get you in a moment once it's clear but I've got a bad feeling about this so stay where it's safe. Please?"

"Ok, but only because you're doing that adorable thing."

Kate Beckett rolls her eyes as she leaves the author in the car, playing away on his phone and trying to hide both his curiosity and his worry. Their friendship has just reached the point where she now understands that most of his flirting comes from him hiding deeper emotions, worry being a major one.

Pushing thoughts of her friend to the back of her mind she nods to Javier Esposito who proceeds to lead his partner, Kevin Ryan and herself into the warehouse.

They move silently, cautiously as all their nerves are alert in anticipation, no one shows it but all have the same thoughts; something big is going to happen. They communicate with the ease of long companionship and have soon discovered the building to be clear.

Sighing with an unusual relief the boy's investigate some of the many boxes littering the place as Kate turns back to the entrance to go get Richard Castle. She makes to the door before two flashes of light blind them all.

Within moments she can hear her friend calling from the car and with a nod she allows him to come to her. She turns to the others as he runs towards her, her movements stopping as she sees her old high school friend standing where no one had stood before.

The boy's are standing close by, guns out as they react to the situation. After making sure that they are fine, Kate turns back to the newcomers. It has been many years since she last stood face to face with Samantha Carter, although the two had kept contact.

They had been best friends before either had lost their mothers and the bond between them had never been broken despite minimal contact. Still seeing the long haired blond, standing gun in hand, makes her stop in shock. The air force colonel recognises her and lowers her weapon, motioning for her companion to do the same.

Kate's eyes focus upon the man. Tall and dark skinned, he looks imposing and strong but as she looks further she recognises him from her friend's description. Teal'c, her close and loyal friend. He would cause no trouble to them, provided they cause no trouble to him, or his friends.

"Sam, it's been a while, care to explain?"

Nodding at Esposito, their own weapons are lowered as the two women talk.

"Yeah, I've got a lot to explain but not here, somewhere secure and private. We were responsible for the white light but we need to figure out the cause of the blue, and what effect it could have had upon us all."

Confusion is evident upon everyone's faces, no one knows the connection between the women and it is clear that although they will trust their friend's actions, they would appreciate an explanation before continuing. Castle especially shows his curiosity.

Rolling her eyes at him she complies with their silent requests.

"Guys, we went to school together, never lost contact, enough explanation?"

They nod in unison and Sam has to suppress a smile. Finally meeting these men, who are so important to her friend, has been a long time coming and she can already see just why their friendship means so much to Kate.

A strange whirling distracts them, as noise begins to fill the room. Splitting up they search the room for the source, checking each box. Castle tags along with Kate, silently pleading with his eyes for more information while his mind creates all sorts of theories. Everyone else is alone, being armed as well as trained. It is Teal'c that finds the offending object.

"Here"

The man is not one to waste words as his voice booms through the room, Esposito smiles; he can already tell that he will like this man. They all follow his voice to him and stand around a crate that sits beneath one of the dirty roof windows. A shaft of diluted light falls down upon the area, illuminating them.

Seconds pass as they watch the case being torn open and stare at the strange artefact within. It is a bluish colour covered in strange markings and the odd clear crystal. Each person makes their own comment.

"I believe this to be what we are looking for."

"Daniel is going to have a field day."

"This is so cool!"

"Wow."

"That's a lot of blue."

They all turn to hear the sixth comment and are slightly surprised to not see Ryan. Biting down the guilt of having taken so long to notice him missing, worry begins to form and so Kate calls him.

"Ryan, where are you?"

The call is rewarded with running footsteps but the sight of the person that rounds the corner shocks them all.

Please review, this story looks to a long one and your comments are always so motivational, I'd love to know any thoughts on where this could go.