A\N 1: Thank you to my amazing friends on Twitter who began talking about what it would be like if Antonio and Matt were both detectives and partners. I loved the idea and they let me write it for them. I am deeply honoured and I hope that they enjoy this first chapter and that it's everything they hoped it would be.

A\N 2: This story is A\U as Matt is a police Detective working in the Intelligence Unit. However all the other Intelligence people are the same so I'm just adding him into the mix, also I'm making it kind-of A\U in terms of Antonio' marriage situation (in my story he's happily married and not having any problems). Since I am a huge Dawsey fan I might have Matt and Gabby start dating further into the story but I'm not sure yet. So with that I hope you're not to confused and I hope you enjoy this first chapter.

Disclaimer: I do not own Chicago Fire, Chicago PD, NBC or Global

Spoilers: None

Warnings: None

Chapter 1

Fists banged on the table and it was clear Detective Antonio Dawson had, had enough of the lies the suspect was telling him.

"I'm going to give you one last chance…" He breathed out hot breath, his teeth clenches together, "Tell me where Victor Gonzalez is."

"Yo no estoy diciendo mierda." He said staring at Antonio a smirk clear on his face.

"Oh yeah he's stupid," Antonio narrowed his eyes and sighed, "You know my friend here is right. You wouldn't last a second with me in the cage."

"The cage?" He asked, his accent clear as day.

"Yeah a little place we put people like you. Our boss likes to do things differently, maybe you've heard of him. His names Hank Voight."

The man's eyebrow's raised, "Yeah I've heard of him."

"Good, then you'll talk." He seemed satisfied.

"I'll talk in Spanish," He concluded eying Matt up and down, "If I'm going to sign my life away the least you can do is let me sign it away in my first language."

"I knew I should have paid more attention in high-school Spanish," Matt mumbled as he and Antonio shared a nod and he left the room.

Making his way back towards the Intelligence Squad room he thought back to the last eight months. He had worked in Homicide when the opportunity for a newly formed Intelligence Unit opened up. He jumped at the chance for a challenge and four months later he had been transferred to District twenty-one. He and his partner Antonio Dawson had worked together since their first day in the Intelligence Unit, though they were both wary of each other at first they become fast friends and worked well together.

Him and Antonio though were complete opposites in every way. He had blonde hair and green eyes and was Caucasian and single while Antonio was of Spanish-Dominican descent and had dark hair and eyes, could speak fluent Spanish and was married with two children.

Settling in his desk Matt looked up when a fellow detective in the unit, Erin Lindsay began talking, "You get anything out of him?"

"Antonio's talking to him in Spanish," He explained, "I thought I'd be better follow some of the leads my CI's gave me."

"Ah," She let out a small smile then returned to work, her partner Jay Halstead working at the desk beside hers.

Less than half- an hour later Antonio returned to the bullpen carrying a printout of information, "We have a lead on a possible target hit," He posted the information on the board.

Sergeant Voight, head of the Intelligence Unit nodded at Antonio, "Nice work. I don't want to know what you had to do to get that."

Antonio shrugged his shoulders, sure it wasn't just talking he did with the suspect but Voight shouldn't be complaining, he often used illegal tactics to get the unit what they needed.

"Alright you and Casey see where this lead takes us," Voight spoke and went back into his office motioning for Erin Lindsay to talk to him.

Detective Alvin Olinsky and Officer Kyle Rusek, who had been pulled early from the academy left to do more undercover work and that left Antonio, Matt and Jay in the bull-pen, all three men staring at each other.

"You guys know what's up with those two?" Halstead broke the silence, "Is he like her dad or something?"

Detective Casey looked over at Halstead who at twenty-seven was six years his junior, "Why Halstead? You thinking of asking her out?"

A slight blush crept onto his face and Casey and Dawson both smirked, "She's pretty but so out of your league," Casey playfully warned.

"Hey, hey I can handle myself," He defended his actions as the door to the office opened and both Sargent Voight and Erin Lindsay walked out.

Sergeant Voight glared at his two senior detectives, "What are you two still doing here?" He growled.

Neither man answered as they scurried out of the bullpen and down the stairs. Walking past the front desk and outside Antonio reached out his hands, "We'll go out for lunch, hand me the keys."

"I'll bet ten dollars I know where we're going."

"Give me the keys," Antonio repeated.

Casey dug the keys out of his pocket and handed them to him. He climbed into the passenger seat, "So would I win the bet?" He wondered.

Antonio just laughed and left the parking lot. The drive was mostly silent as they listened to the police scanner on the radio, Antonio's ears perking every time he heard something involving firehouse 51; his younger sister was a paramedic on ambulance 61, stationed at firehouse 51.

Arriving outside of their destination Antonio parallel parked the car on the road and hoped out.

"I would win the bet," Matt smiled more to himself as he walked onto the sidewalk and started up at 'Dawson's bakery' which Antonio's wife Laura owned.

That was another thing that was different between and Casey. His family meant everything to him and he would do anything for them, he was best friends with his younger sister and saw his parents on a regular basics. Whereas Casey didn't like to talk about his dysfunctional family and rarely mentioned his older sister and her husband and young daughter.

Walking into the bakery Antonio was happy yet disappointed to see it was crowded, he was happy as it meant his wife was getting more business but also disappointed as that meant he might not be able to see her.

Snagging two sandwiches from a fridge he lined up along with Matt at the cash register line-up.

The girl, a young twenty-something still in University was manning the cash and smiled when she saw Antonio, "Laura's in the back. She'll be happy to know you're paying though."

"Ah if it isn't the local thief," Antonio's wife walked through the double doors and into the main part of the store, "Make sure he pays Jill," She smiled, "Casey though doesn't have to," She mentioned walking around to the front of the counter and quickly kissing Antonio.

"Hey," He protested as he watched her leave to help the other costumers but she was already gone.

He mumbled something in Spanish but Casey could see the smile on his lips as he pulled out the money, "Make sure you tell Laura I paid," He rolled his eyes and chuckled as he handed Matt one of the sandwiches and gave his wife a quick wave before leaving the shop.

"You'd think I always came in and stole food," He mumbled as they climbed back into the car.

"Well you do," Casey reminded him, "All of time in fact."

"Shut-up," Antonio through a rolled up piece of paper at him still smirking, "You still able to come to the fourth of July BBQ at my house next weekend?"

"Yeah. You sure I won't be intruding though." He said, as he knew it was going to be Antonio's family.

"No, no Laura's been bugging me to have you over for dinner, plus the kids have wanted to meet you. It'll just be me Laura and the kids, my sister, my parents and you."

"Fine but I'm helping with the barbeque or I'll bring beer or something."

Antonio chuckled, "I'll tell Laura you want to barbeque, she'll be happy."

"Why?"

"Because according to her I'm thee world's worst cook."

"Well she's obviously a good cook," He mentioned.

"Yeah all the woman in my family are. My Mom, my sister and even my daughter now."

"Eva right? Your daughter?"

"Yeah Eva and Diego," Antonio smiled at the mention of his children.

"And your sister is Gabriela?"

"Gabby. I only call her Gabriela to bug her," He laughed, "I wouldn't suggest calling her by her full name unless you want your ass kicked."

"I'll remember that."

"Good," Antonio turned the key in the car and drove off.

TBC