Hola, here's a new one. EO haaa. But don't think it'll be all beautiful and puffy. This fanfiction will also be a Maria/Nick pairing :). I hope you'll like it.

FYI: Elliot is divorced, it's been 2 years now. All of this takes place season 15. Nick Amaro & Amanda Rollins are here, Munch is still here, Fin too, Elliot is there too!

Elliot's kids are the same except little Eli doesn't exist. Olivia takes good care of this baby boy doe... Will she adopt him? You'll see. I guess we should start that I told you everything you should know. Enjoy!

Please read & Review. I'd be happy to change some things that you may not like.

All my love to you, Amy.

Voicemail. "Olivia where the hell are you? I can't cover you forever... Please call me back, I wanna know if you are okay." he hung up and sighed, so much for seeing his kids tonight. Today was Dickie and Lizzie's birthday and Elliot wanted to have the night off so he could visit them. Since Elliot and Kathy's divorce, he wasn't seeing his kids very much anymore.

Where the hell is she?

He was pissed. But mostly, he was worried. She's been gone for 3 hours and no one heard of her since. He sighed and joined the squadroom, knowing he'd be in hell if Cragen asks him where Olivia is.

Elliot sat at his desk and dialed Olivia's number once again. Voicemail. "Damn it!" he hung up and threw the phone on his desk.

They've been partners for over 14 years and it's never happened before, Olivia wasn't answering her phone and Elliot didn't know where she was... And when she finally came back to the station, it was 4 hours after she left. He got up from his desk and walked to her as she was making herself a coffee.

"Where the hell have you been?" he hissed, trying to keep his voice down.

"I'm sorry I went to see Baby Boy Doe, he is at the hospital.. I didn't see the time fly. I hope the Cap didn't notice." she explained.

"You could've called me, I was worried sick!" he told her, anger written on his face.

"I'm sorry- I forgot..." She was surprised by his reaction.

"Yeah, right. You forgot." he scoffed, he started walking away but Olivia grabbed his arm.

"El look, I'm so sorry..." she didn't really know what to say to apologize.

He was about to say something but Cragen came out of his office "Elliot, Olivia, a word?"

Olivia turned to Elliot "What did you do while I was gone?" she teased. His head shot up and he glared at her. "I'm not the one who's been for 4 hours." he hissed before entering his captain's office.

He waited for Olivia to come in and closed the door behind her.

"Have a sit," Cragen said.

"Cap, if it's about earlier I'm just-" she began

"You didn't do anything wrong Olivia... Unless you've got something to tell me, that is."

"No." Elliot said quickly, he gave Olivia the You-should-keep-your-mouth-shut-sometimes look and turned back to his captain. "What's up?" he then asked.

"Look, I Would never have asked you what I'm gonna ask you if I had another it's important – We need to track a group of people who've kidnapped 8 girls, all are between 7 and 13. FBI thought if I sent two of my best detectives undercover we could maybe stop them... It's a high priority case you two-"

"We've been assigned to this one.. great." Olivia finished his sentence and sighed.

"How long are we talking about here?" Elliot asked.

"As long as we need to stop them.." Don Cragen said.

"Captain, I need to know so I can tell my children. I was supposed to be with them today for the twins's birthday but.. the case took us longer." he didn't really want to tell Cragen about Olivia's absence. "So I just really need to know how long we are going to stay undercover."

"Elliot, I swear I don't know. It could take 2 days, a week...more."

Olivia finally understood why Elliot has been so upset about her absence, and it wasn't only because she didn't call him.

"Captain, I'm okay to go but maybe you should let me go with someone else..." she said

"No. No way Liv. You're my partner, you are not going there alone or with someone else. I'm okay to go, too." How was he gonna tell the children...

"Go home, both of you. You'll get all the informations you need tomorrow morning. Elliot tell the Twins I said happy birthday" he offered.

"They are probably asleep by now but I will, thank you Cap." he said and left the office with Olivia following behind.

"Elliot, wait!" Olivia called after him.

He turned around and Olivia saw how upset and tired he really was. "What? You're gonna ask me to stay here again so you can go see this baby again?" he snapped.

Her heart broke, "No, no I'm sorry for-" he held a hand up

"Save it" he went to the locker room and she followed him once again.

"Please listen to me" she said softly. "I'm so sorry about earlier I know you wanted to be with your kids and- I'm sorry " she whispered.

When he turned around, his eyes were red. "Yeah, right. It doesn't matter now... it's too late." He threw something into his locker and slammed it before turning to Olivia. "I can't believe he assigned us to this undercover mission, it's too risky"

Olivia walked over to him and placed a hand on his shoulder. "Calm down Elliot" she tried to tell him. "It won't last forever and you'll go back to your kids, it won't be risky.

"I'm not talking about my kids here Liv... I just- I don't want anything happening to you, last time you were UC you got...hurt." he looked at Olivia and saw how uncomfortable she was with the situation, "And I just can't leave my kids like that.." he cleared his throat. He looked at Olivia who just nodded.

"I can understand. I'm gonna ask Cragen to put Fin or Amaro." she started making her way to the door when she felt a hand on her forearm.

"I already told you no. I'm your partner, we're doing this together." he let go of her arm and took a step back.

"What about your kids?" she started "Kathy?" she felt the need to ask.

"It won't last long, right? My kids will be fine...And Kathy, we've been separated for 2 years now she's got nothing to say." he shrugged.

"Well I guess we're really doing it then..."

R&R .