Two weeks later found Cassie stood outside of the shooting range with Kim and Hailey as they watched the boys, at one stage Cassie noticed Adam joking around with Kevin and giggled when Kevin pulled Adam into a headlock. Realising that Kevin was in no hurry to release Adam Cassie along with Kim and Hailey entered the range.

"Morning Atwater, for goodness sake put him down you don't know where he's been"

Jay wandered over and pointed at Adam and then Cassie "All over you I imagine"

Cassie laughed and rolled her eyes "I can assure you that Adam has been a gentleman and not even been in my house, let alone my bed"

Kevin released Adam from the headlock and smiled as Adam started to blush "Yeah but I bet he wants to be"

Cassie looks at Kevin with her right eye brow raised and then at Adam's red face "Ever heard of friendship Atwater? You might try it one time"

Everyone else laughed as Kevin pretended to have a broken heart, in the two weeks that Cassie had been with the intelligence unit she'd become fast friends with Kim, Hailey, Kevin and Adam. Trudy and Hank were her babysitters when her dear friend Ethel couldn't.

Speaking of Darcy she was currently in Hank's office in her high chair being fed her breakfast.

"Hey missy you're getting more of that in your hair than your mouth, now princess this just won't do"

Hank grabbed the wet wipes and attempted to wipe the porridge from Darcy's forehead, in protest Darcy flung her Sippy cup at Hank's head missing and it flying out of the office and landing at Trudy's feet.

"Good shot Darcy, but I didn't want any of your juice my darling girl"

"Morning"

"Morning Voight" Trudy looked at Darcy still in her pyjamas "Was Cassie running late by any chance this morning?"

Hank nodded "This little ladies only been awake ten minutes and is already causing chaos"

Darcy blew a raspberry and slammed her hands on the tray "Ok I'm causing chaos not you, sorry Miss Darcy"

Trudy smiled shook her head and lifted Darcy from the high chair "I'm going to go get her ready, you ok to clean this up?"

Hank nods and waves bye to Darcy as Trudy passes the buggy and grabs the diaper bag.

Back with the rest of the team, Kim Hailey and Cassie were on the shooting range, the boys watching, surprisingly out of Kim, Hailey and Cassie. Cassie was the better shot and she'd only been on the shooting range a full three days.

"How on earth do you hit the target every time?"

"I just imagine all those arseholes of the CFD and that does it"

Kim shares a look with Hailey "Cassie what happened?"

Cassie looks out at the guys and smiles at Kim and Hailey "If I'm going to tell you, it might as well be the whole team, but for now shall we see who out of all of us is the best shot"

Hailey giggles "That sounds like a plan, go get them"

Cassie walks to the shooting range door and smiles at Jay, Adam, Kevin and Antonio "Hey boys fancy a challenge? Want to see who has the best shot? Not bragging but out of me, Kim and Hailey I'm the best so what do you say? You men or mice?"

Antonio puffs out his chest and hits his chest "Me man"

Cassie giggles "Right, anyone else?"

Jay, Kevin and Adam said nothing but wandered into the shooting range, Cassie winked at Adam who smiled back and walked over to Cassie. After facing off with the majority of the unit it was Cassie and Jay's turn.

"You ready for this Mitchell?"

"I'm always ready Halstead"

It wasn't lost on the others that Jay and Cassie didn't get on, a lot of that stemmed from Voight going to Cassie and not Jay. Jay understandably felt pushed out by those actions, he'd been Voight's second for some time now that was until Cassie came on the unit, that wasn't fully Cassie's fault she'd often remind Voight of this but Voight being Voight would do his own thing.

"Best of three?"

Cassie raises both eyebrows and rolls her eyes "Best of three? How about the closest to the bulls eye is the overall best?"

"Fine by me, ladies first?"

Cassie gets into position and aims at the bulls eye and shoots, just hitting on the outer rim, Jay steps up and aims at the bulls eye and shoots hitting the bulls eye dead centre, he looks at Cassie and then the target and walks away.

"Jackass!"

Jay hears Cassie and turns back around "What did you just say?"

"A jackass and deaf"

"Who the hell do you think you are? You come into the unit, take over and think everyone should like you, well here's news for you I don't"

"I never said you had to like me, not my fault Voight comes to me all the time, I've told him so many times go to Halstead, but he doesn't, how is that my fault?"

"Oh look at me Cassie Mitchell only been on the job two weeks and is already been made a Detective, how many sexual favours did you have to give for that?"

"You don't know me or my background, you presume like everyone else that I give myself to everyone, well I don't!" Cassie takes in a deep breath and tears fall from her eyes "If your referring to my six month old daughter, she in fact is my niece and I adopted her at three weeks old when my mom, dad, sister and brother in law were all killed in a car crash, but you might as well join the long queue of people who think I've got to where I am in life by screwing around"

Jay realising he's gone to far attempts to apologise "Mitchell...Cassie look I'm sorry ok?"

Cassie says nothing but turns her back on Jay and walks away heading towards the ammo cage, Jay looks at the rest of the unit and walks away as they shake their heads and go about their business, Adam eventually back tracks to find Cassie back in the shooting range firing her gun at the target in front of her.

"Save some ammo for the rest of us"

"I'm not in the mood for pleasantries Adam"

"Ignore Jay Cassie he doesn't mean anything by it, I find it funny that you've beaten me to the Detective status"

"I didn't ask to be a Detective Adam, came in on shift and was told I was a Detective and that when we eventually go undercover I'm in charge"

"Yeah makes sense though"

"Maybe it does but it doesn't help that only you, me and Voight know the reason as to why I'm a full fledged Detective within a week"

"Maybe ask Voight if we can fill the rest of the unit in? Might make Jay feel better knowing your not after his job"

"Adam as soon as this undercover operation is completed I'm going back to the CFD, I'm a firefighter not a Detective"

Adam nods "I know but for now though your Detective Cassie Mitchell and my partner" Adam groans and looks at Cassie "I meant partner as in work partner not partner partner"

"Ruzek do you always ramble on like this?"

Adam shakes his head and rubs his neck "No this is new"

Cassie turns back around and starts to focus on the target in front of her, Adam stands behind her watching. Adam can't help but stare he found twenty-six year old Cassie very attractive, with her five foot nine frame, slim build and long curly brunette hair that reached her ass, who wouldn't fancy Cassie in Adam's opinion?

"So...?"

Cassie looked over her shoulder at Adam and smiled "Yeah?"

"Nothing"

Adam moved closer to Cassie and stood directly behind her, he then took another step forward and placed his right hand on Cassie's waist, he stepped sideways pulling Cassie with him. Adam then gently took hold of Cassie's locks and brought them back over her shoulder his left hand gently caressing her neck. Adam breathing deeply took in the scent of the coconut shampoo and Cassie's perfume.

Cassie still holding her gun and trying desperately to concentrate fails and shoots one round off and into the target three places over "Adam? What are you doing?"

"Nothing just showing you a different stance"

"Uh huh" Cassie sighs deeply "Adam...I..."

Adam turns Cassie to face him and kisses her, Cassie instantly wraps her arms around his neck and kisses him back, quickly reality sets in and they both pull apart, looking down at the floor Cassie quickly puts the safety on her gun and puts it in her holster.

"Sorry that should never have happened"

"No, but I don't regret it"

Cassie sighs and walks past Adam "I didn't say that either, but still should never have happened, bye I'm going to the bullpen, see you"

Cassie quickly walks away and Adam stares up at the ceiling "So stupid!"

Adam walks out of the shooting range and towards the bullpen little did Cassie or Adam know that Sergeant Trudy Platt had witnessed everything and was going to have fun with them both. Trudy walks into the bullpen to find Cassie sat with Antonio and Adam with Jay, she smiles and heads towards Voight's office. He waves her in and points at Darcy asleep in the pack and play.

"I think young love is on the table"

"Who is it now? I'm only just getting used to Halstead and Upton!"

"Mitchell and Ruzek"

"You what?"

"I said Mitchell and Ruzek"

"How do you feel about it?"

Trudy stands beside the sleeping baby and then turns to Hank "What can I do? She's a grown up"

"Urmm Trudy she is your..."

"I know that Hank just leave it, I was just going to tell you I caught them kissing in the shooting range"

"At least it was the shooting range and not the locker room pressed up against the wall" Hank smiles and then giggles, which is so not Sergeant Hank Voight "Cold water buckets I think"

Trudy nods and looks out into the bullpen "Care to have some fun with Cassie and Ruzek?"

"Oh yeah"

Trudy opens the office door and announces "Found an extra shell casing on the shooting range lane third one over"

"Noted I'll get the CCTV pulled Sergeant Platt, thank you for letting me know"

Trudy nods and walks past Cassie and raises her eyebrows at her "Mitchell you know anything about this?"

"Nope nothing, sorry Sarge"

"Neither do I"

"I didn't ask you Ruzek"

"I...yes I realise that now"

Cassie stands up and heads towards the locker room, Trudy notices and follows Cassie to find her sat on a bench and her hair over her face.

"Talk to me Cassie"

"It doesn't matter, leave it Trudy please"

Trudy sits beside Cassie and side hugs her "You know I can't just leave it, I've been there every step of the way since you lost all your family, I told you if you couldn't talk to Ethel you could talk to me"

Cassie starts to cry "I miss them so much, then I'm thrown into this and Jay hates me, I have no one apart from Darcy, I just want my mom back and maybe a few good friends"

"Hey now, you have the whole of the Intelligence unit here for you" Trudy wipes at the tears flowing down Cassie's face and tucks the loose bits of hair behind Cassie's ears "Your daughter has wrapped her little fingers around the unit, if you don't want to fully tell them everything then know you've got me"

Cassie sits up wipes her face and smiles "Thanks Trudy, you know you have that though persona about you but in reality you're truly the mom of the unit, got everyone's back, it's not something I'm used too"

"Yeah well don't tell everyone, mom? Sounds nice"

"Oh I didn't mean that I class you as my mom, I meant the units mom, ok I'm shutting up now"

Trudy smiles raises her eyebrows and hugs Cassie again "Look if it helps you can call me mom" Cassie smiles and nods "Ok in that case I'm going to go now and kick Ruzek's backside for kissing my girl"

"Oh crap, who else knows?"

"Voight"

"Damn it Trudy"

Trudy walks out of the locker room and walks back into the bullpen takes a step towards Adam as Cassie skids into the bullpen and ends up in a heap by Jay's feet.

Looking up as Jay looks down "Uh hi Halstead"

Jay in utter confusion holds out his hand and helps Cassie to her feet "Thanks"

"Not a problem"

Cassie takes a seat at her desk, Jay at his everyone else looked on in amazement they both had been nice to each other, which was so rare it wasn't funny. Hank walked out of his office and addressed the unit.

"We've got a call local unit wanting assistance, Mitchell you're with Halstead on this one"

Jay and Cassie exchange looks and walk some distance away from each other to get geared up and into Jay's truck, five minutes later found Jay and Cassie in his truck in a deafening silence, ignoring each other until their feet hit the tarmac and all hell broke loose.

"50-21 Patrick to 50-20 were under fire, how do you want us to proceed?"

"50-21 Patrick stay where you are until Upton gets to you she's a trained negotiator, over"

Whilst Cassie had been relaying with Voight, Jay had crept towards an entrance and at the last minute Cassie saw Jay enter the building.

"Halstead what the hell are you thinking?"

The sound of a radio clicking was heard but nothing coming through, then a gun shot rang through the building, not thinking about it Cassie took off running and into the building after all Jay was her partner and regardless of them not getting on, Cassie's instincts kicked in and she felt Jay needed her.

Entering the building she scanned the area to her left and then her right before proceeding ahead to the sounds of raised voices, finding a place to settle and looked directly at the guy holding Jay at gun point, Cassie looked around the space to her left and right finding on the right a gap big enough for her to crawl through, proceeding forward quietly she came more into view of Jay who remained still.

Cassie held her gun out in front of her and stuck her head up to peak at the gun wielding man and took a shot at the gun, hitting it and rendering the gun useless.

"Who's there come out right now!"

Cassie stood up gun in the air "I'm coming out, see I'll put my gun away"

"Cassie what are you doing?"

Cassie glanced at Jay and smiled "See fair play now, can you tell me your name?"

"Jesus!"

"Well hello Jesus"

"You're a cop?"

Cassie nods with her hands in the air "I sure am, who are you?"

"I'm god and your my children and you will pay for your crimes"

"I've committed no crime Jesus, I prevent it. I'm like you"

Jesus shakes his head and laughs "No I'm god, you're not like me, you're trouble and you both need to be punished"

Cassie backs towards Jay "Punished for what Jesus? Talk to me what crime have we committed?"

"You don't talk to me I tell you when I'm ready, do you hear me?"

Cassie stops moving backwards and puts her hands on her hips "Oh we hear you, just don't agree with you"

Jay tugs on Cassie's leg and whispers "Don't antagonise him!"

Cassie whisper back "I'm not"

"Stop talking amongst yourselves I don't like it"

"Ok Jesus we'll stop, you talk to us then if that makes you feel better, what do you say?"

"I say stop talking to me I'm not ready" Jesus starts hitting himself "Shut up I'm not ready"

"Jesus is someone telling you not to talk to me?"

Jesus starts to pace before stopping abruptly and pulling out a knife "They tell me to shut you up now!"

"You don't want to do that Jesus, you see I'm a good person to know"

Jesus glared at Cassie and with his fingers beckoned her closer to him, Cassie took a step forward keeping her right hand close to the holster holding her gun, as Cassie got closer Jesus started waving his arms around aiming the knife at her, Cassie bopping and weaving avoided the knife. Cassie swept her right leg out and took out Jesus's legs, he fell to the floor and the knife sliding away and under a box.

Cassie held her gun at Jesus and looked over at Jay who was getting to his feet, Jesus took that opportunity to kick at Cassie causing her legs to give way and for her to fall to the floor her gun falling with a thud and sliding out of reach, Jesus quickly rolled Cassie over and started to strangle her, Jay quickly found Cassie's gun and shot Jesus, Jay ran to Cassie pulling Jesus off her and dragging her to her feet.

"You ok Mitchell?"

Cassie rubs her neck and nods coughing she smiles at Jay "Thanks"

"No thank you, partner"

"Seeing as we saved each others asses, we ok now?"

Jay nods and pulls Cassie into a hug "Welcome to the team"

Cassie giggles "So saving your ass and getting strangled makes me part of the team now?"

Jay nods and walks away towards the exit, Cassie takes one last look at the body of Jesus and follows Jay outside, once outside Cassie is pulled into a hug by Adam and then pushed back as he examines her neck before glaring at Jay.

"You couldn't protect your partner? What were you doing scratching your ass?"

Cassie stepped in front of Jay who moved towards Adam "Don't even go there Ruzek, that's a Detective you're talking too, show some damn respect Officer Ruzek!"

Cassie walked away and towards Jay's truck, he watched her get in before turning to Adam "For your information Ruzek she got those marks on her neck after I went in the building without her, so I'm grateful she was my partner today, now if you'll excuse me we'll see you back at the District, I'll wait for you in your office Sarge"

Voight nods and watches as Jay's truck leaves, he assigns the remaining members of the unit their tasks and heads to his SUV, he needed a serious discussion with his Detective's, fifteen minutes later Voight walks into the bullpen and straight into his office, he finds Cassie and Jay stood to attention and their hands behind their backs.

Hank sits down and sighs "Care to explain to me why you ignored a direct order?"

"Sarge I didn't intend to ignore a direct order, you see..."

"Mitchell you've only been in the unit and this job two weeks if you want to keep working here then you listen to orders" Hank rubs his face "You need to think about your daughter"

"I do think about her all the time doesn't mean I can't do my job Sarge!"

Cassie turns around and heads to the door, Hank stands up "Where do you think you're going I'm not done here!"

"Well if you learnt to listen to your team before jumping the gun then you'd know what happened, but Sergeant Hank Voight thinks he knows best, when in fact you know nothing! Now if you excuse me I have paperwork to fill out"

Cassie pulled open the door and stormed over to her desk, sitting down in her chair. From within the office Hank and Jay could hear and see the slamming of desk drawers and a lot of swear words. Jay turned to Hank.

"She's right you know"

"Excuse me? What does my rank say? Sergeant means I'm in charge of this unit not you or Mitchell"

"You're one stubborn bastard!"

"Get out!"

"You know if it wasn't for Mitchell today, I wouldn't be here now"

"What?"

Jay points over his shoulder at Cassie "As soon as we got on scene, shots were being fired, Cassie was talking to you threw the radio, I decided I wasn't going to wait and entered the building alone, without clearing it with you or letting my partner know. She must have saw me at the last minute and radioed me asking what I was doing, I ignored my partner. Without thinking she came in that building to help me, Voight she was calm and got us out, fine she got injured but it could have been worse, a lot worse. So instead of hiding behind your desk and being a complete arse, maybe make her feel like she did a good job? If what I've briefly seen, she's going to make one hell of a Detective"

Jay leaves the office, he walks over to Cassie and places his hand on her shoulder, Hank watches as Cassie and Jay nod at each other and start working at their desks, with a sigh Hank walks around his desk and walks out of the office and towards Cassie's desk. Cassie knows he's there but chooses to ignore him.

"I'm sorry Mitchell"

Cassie looks up from her desk "Sorry didn't quite catch that"

Hank mumbles something about selective hearing and looks at Cassie and Jay who both have small grins on their faces "You two will be the death of me!"

"Oh wow Jay you could become leader of the pack"

"Yeah as long as your my second Mitchell"

"Definitely Halstead, now Sarge what did you say?"

"I SAID I'M SORRY"

Nobody had realised that everyone had returned and was stood on the top step of the unit, until.

"Why is Voight apologising?"

"What's it to you Ruzek?"

"Well we walk back into the bullpen to hear you shouting that your sorry, it's not something I've ever heard you say, anyone else?"

The rest of the unit shook their heads, Cassie and Jay look at each other and burst into laughter, Hank glares at them both before turning around and heading towards his office and slamming it shut, nobody says anything or even bothers to ask Cassie and Jay as they are both crying with laughter with their heads on the desks, realising that they weren't going to get anything out of Cassie and Jay the rest of the unit sit at their desks continuing with their own work, life within the unit for sure was getting odder by the day.