Author Note: Hey guys, I decided to write this storyline for Callen and my own characters. Callen is surprise to find a woman who was from his past is there. Please read and review and let me know what you think.

Callen walks into the office to find some girl sitting in Hetty's office and so he walks to workroom that he shares with the team.

"Who's that?" Callen asks Sam who is sitting there drinking his coffee.

"I don't know but Hetty said that she is starting here today."Sam reveals to his buddy.

"Oh." Callen says as he watches Hetty with the new girl. Hetty and Lauren walked out of her office to introduce her to the team that she will be working with. Callen sees that his ex-wife is the one that is joining the case. He lets the introductions happen.

"Lauren, can I talk to you for a minute?" Callen asks his ex-wife. She agrees to it. "Why are you here?"

"Because Vance thought that I would do well on this team. We can work together fine but we need to keep our relationship quiet." Lauren says to her ex-husband.

"What if Hetty finds out that we are divorced? She will have to move you again." Callen says to her.

"No she won't. She already knows that we were married and we got divorced. So relax and plus I was not the one that left. That was you." Lauren said to him as she starts to walk away when Eric calls them up and they start with their first case. After they finished the case, Lauren goes to her apartement for the night. She's about to get ready for bed when she hears a knock coming from her front door. She opens it to find Callen standing there.

"Why were you acting so cold to me this morning?" Callen ask her since the last time that they talk seven years ago was thou their lawyers.

"Because you are the one that left me and did not want to be with me anymore." Lauren said to her ex-husband. "I hate you and I want you to leave." She shuts the door in his face. Callen doesn't understand why she is acting like this and he needs to find out about it.

Lauren sits down on her couch and starts to cry when her seven-year old son comes out. He looks so much like his father and she's trying to keep him safe from Callen's family issues.

"Mommy, who was that man you were talking to?" Eric asks his mom.

"He's old friend of mommy. We work together." she said to her son. "Come let's get you to bed.

The next morning, Callen came into the office to see that his ex-wife was there getting ready for the day.

"Hey." Callen greeted his ex-wife as he puts his laptop down and starts working on the review of their last case.

"Hi." Lauren says to him.

"I saw this little boy at your apartment. Who's son is he?" Callen questions her.

"Don't start Callen." Lauren replies to her ex coldly.

"I am going to get down to the button of this. He looks like he is seven years old." Callen responds to her as they walk up to the ops. They start on another case.

Author Note: alright so that's it for chapter one of this storyline. I hope that you enjoy it and review on what you think is going to happen next. As always Follow me on twitter carson34ff for updates! Enjoy.