A/N THIS IS A REWRITE OF MY WATTPAD STORY 'THE OTHER VOIGHT'. I DO NOT OWN THE ONE CHICAGO FRANCHISE. PLEASE READ AND REVIEW.

The whole team had left almost an hour ago but Erin had decided to stay for a little while longer. After promising to see Jay at home she took it upon herself to update the whiteboard. This case had got to her from the very beginning but after discovering her sister's involvement she couldn't help but feel more attached and dependent on closure.

"So what happens now?" Erin asked Voight as he joined her standing in front of the white board.

"We catch them." Voight nodded, simply. They hadn't really spoke about Ana's involvement and Erin knew Voight hadn't been impressed but this was his daughter, no matter how stubborn she had become or how much independence she had earned herself, she was always going to be the focal of his life.

Erin had just placed a photo of Ana on the whiteboard, the photo had been taken at her Law school graduation, it was a picture of Erin, Anna and Justin. She could remember the day like it was yesterday and sure enough it brought a smile to her face.

Flashback:

It was the day of Ana Jane Voight's graduation. She had completed her three years at Law school with one of the highest grades in her class and after today she would begin her career as an attorney in a well known practice in the city centre. Being a lawyer had never been Ana's childhood dream but seeing people like her dad work cases for month for it to only collapse in court didn't bow well with the Voight.

So when Voight's daughter graduated, it had been one of the proudest days of his life because he had always know his daughter would change the world for the better.

Antonio had been caught up in his first detail and hadn't been able to get the time off, instead, he had sent her a boqeut of hundred leaved roses. A sentiment of his sincere love, promising to make it up to her when she arrived back at his apartment later on in the evening.

It was after the ceremony and all the students had dispersed out of the hall where they had all met their families. At the sight of her father, brother and 'sister' she ran towards them, engulfing them all in a hug.

"Hey Erin, what do you think you're doing?" Ana asked, her eyebrows raised at the older girl who had separated from the hug, she, Ana and Justin had been embraced in.

"Taking the photo?" Erin shrugged, holding up the camera they had brought.

Ana stepped forward slightly, her hand still holding to Justin "I don't think so. It's a sibling photo." Ana tilted her head back slightly in the direction of her brother. "I can't have a sibling photo without my big sister can I?"

"Thank you" Erin smiled brightly. She had been off the drugs for years now but she still had the occasional slip up, she was getting there.

"It should be me thanking you. You're the best big sister anyone could ask for, so thank you" Anna gushed, her eyes fluttering sincerely.

She had always wanted a sister but when Voight took Erin Lindsay in, it had been different, she was feisty, more feisty than either Voight and for a while it was unclear if she would ever settle into the family home.

Voight stood there and watched his three children proudly. He knew it was going to be hard to add another child to the mix after all Justin and Anastasia had an unbreakable bond but once Erin arrived it became a three way bond and nothing was going to ruin that.

"She made us all proud that day" Voight smiled noticing Erin lost in her thoughts obviously remembering the same day he had. "I'm still not sure why she gave it up." he said, referring to the law career his daughter had.

"Do you think she'll be okay?" Erin frowned looking back at him.

Hank shrugged, he reached his hand out and began to stroke the picture. She was the image of Camille to the point of her personality, it had been hard when Camille died, the traits their daughter had developed had been a constant reminder of what he had lost. "I don't know kid."

"I tried to protect her from the drugs" Her voice quavered slightly. Voight pulled the detective into is arms and the two stood there.

"We all did. We don't know what the situation is, she may be controlling it" Voight said, though he knew that could hardly be true.

"Hank please, you saw it in her eyes. She's struggling." Erin looked up to the older man.

"When this is all over, we'll be there for her okay? But until then we need to focus on a way of getting her out" Voight assured.

"Yeah"

"When was the last time you saw her?" Jay asked as he reached into the wardrobe, hanging up the remains of the washing he had done whilst Erin had still been at the precinct.

Erin sighed, she had arrived back at the apartment an hour ago and she was ready to sleep but Jay still had his questions. "When she was 22." She shrugged. "She went through some shit, quit her job and just...left."

"Uh, why did she give it up?" Jay questioned, turning to face his girlfriend. "She easily put Atwater in his place and the guy didn't mean any harm." He recalled with raised eyebrows. Earlier in the evening, Atwater had insinuated that maybe Ana shouldn't stay undercover, he had only voiced the thoughts of others but the Voight had been quick to defend herself.

"I know and I'm not sure...but I have a pretty good idea." She said, absently although not loud enough for her boyfriend to hear.

"Hey. What's with Antonio and her?" He asked, curiously as he moved towards their bed, shutting the lights off on his way.

She hummed, indicating that she had heard him. "There's..some history there..I-I just hope they sort it out before it-" She stopped herself, shaking her head. Erin nestled further into the covers, her body finally relaxing into Jay's hold. "I just want Ana safe. She's my sister."

Erin and Jay arrived at the precinct bright and early the next morning, Ana had text Erin to tell her about a deal going down later that day and it was going to be big, they hadn't received more details as of yet.

"Hey. Lindsay." Platt called her over, waiting until Erin met her, she continued in a hushed tone. "Is it true? Voight's kid's back?"

Platt, being the desk Sargent saw and heard a lot but this piece of information intrigued her. The last she heard Ana had just been employed in one of the highest paying law firms in Lake Shore.

Not wanting to entertain the conversation, Erin walked away and met Jay by the stairs. Noticing his questioning glance as he awaited an explanation, she muttered. "Not now." With that the two headed to the cage and clocked in.

The team were already preparing for the raid, everyone had agreed to arrive early and they were all currently discussing what would happen as they sipped on the takeout coffee they had brought.

They had just been finishing the finer details when Jay decided to speak up. "And we're still carrying on with the case? Because I'm not a psychic but isn't this whole operation putting Ana at risk? Especially if she gets caught."

"Ana knew the risks of the job when she was assigned to it." Voight's gruff voice could have easily been mistaken for someone that couldn't actually care less but everyone knew that not to be true.

Erin had been filing out the forms for the warrant's they would need whilst Jay had been on site marking out sniper points with Ruzek helping him. The Lindsay had decided to stay here just in case Ana tried to contact them.

"Hey Erin?" Antonio started as he knelt beside her desk. "When Annie left did she say anything to you? Was there something wrong?"

"Antonio" Erin whined, this was between her sister and Antonio she wanted nothing to do with it. "Of course there was something wrong! You got a girl pregnant behind your fiancé's back" Erin said through gritted teeth.

"Yes Erin I know. It's just she said something. Yesterday" He said. He had been mulling over his conversation with the Voight on their way towards Robert Vince's home.

Her head suddenly snapped towards Antonio, suddenly feeling a spike in her heart rate as she wondered what Ana had said. Erin looked around quickly, she just hoped that Voight wasn't around, she knew putting Antonio's broken relationship behind him was hard considering the man hurt his daughter but Dawson was a good detective, she just hoped he didn't screw up. Again.

"She said" Closing his eyes before opening them again he continued "She said 'others needed me more'. Does that mean anything to you?"

It was Erin's turn to close her eyes. Erin began to shake her head, licking her lips as if processing the words to say. "I can't answer that Antonio." She needed to know Ana was okay before she spoke to Antonio and anyway, it wasn't her place to say anything either.

"But you know what she meant?" Antonio queried, his forehead creasing. He was well aware that he had hurt Ana Voight, the woman he had once loved more than life itself but he wanted to know what she was hiding from him, he needed her to forgive him.

Erin nodded.

Luckily, she had been pulled away from the conversation when Voight barged out of his office. "Listen up, I've just got word from District 14. Ana has been working this case for 12 months, 9 of them she has actually been involved with Vince." He shook his head.

"Do we arrest her?" Atwater asked.

Voight nodded. "When we get these guys, they'll have someone ready to silence anyone that is prepared to speak." It was true. Voight knew that Ana's safety would be one of their top priorities during this bust otherwise she wasn't going to make it out alive.

"Will she go into protective custody?" Antonio asked.

"That's up to Ana" Voight shrugged. If he knew his daughter, she would point blankly refuse. Dismissing the detectives, he spoke only to Erin who seemed to be lost in her thoughts. "Erin. My office"

Nodding, she pushed herself from her chair, dropping her pen to the table and followed the gruff man into the dark wooded office. "What's up? Is it Ana?" Erin asked simply alarmed.

Hank gestured for her to sit on the chair but she was quick to refuse, instead of arguing he himself sat behind his desk and leant forward his hands clasped together and eyes close.

His face like thunder. It was clear that something was wrong and judging by the force he seemed to be keeping in, it was bad. Someone was going to really get it. "The Chief just got word that Ana's alone on this one"

"What do you mean?" Erin demanded stepping forward, crossing her arms across her chest.

"Someone caught wind, backed out. She's got no back up" He informed tucking his clasped hands under his chin as he leant on his desk.

"Shit. Why is she still in there?" Erin barked.

"She doesn't know Erin. They've left her in the dark. She's playing this man and her team has left her"

"We need to get her outta there!" Erin screamed, catching the rest of the detectives attention as they watched through the glass. Her voice dangerously low Erin vowed "If we don't get her out of this mess then I will."

"Don't you worry, whoever's responsible will be held accountable." Erin nodded. "Go out there and make sure they're all ready for tonight. I'm not going home without Ana by my side."

"Yes" Erin turned and walked out of the office and into the bullpen.

"O. I need a second" Hank said following Erin out of the room.

"What time are we heading for the docks?" Ana asked Frank Marcel as they walked down the stairs. Her high heels connected with the wooden stairs as she followed him. Her arm had still been sore and her body ached but she knew not to show pain.

This was her ninth month in this undercover and she was starting to get concerned. She hadn't heard from her contact for three weeks now and other than her encounter with District 21 she had known nothing in regard to the investigation only what she had been inputting over the past months.

"A little past 12 darling" Marcel answered smoothly. It turned Anna's stomach when he spoke like that.

Ana knew this case had to come to an end soon. Vulnerable people were being exploited and used to transfer these substances, it was just a matter of time before someone got hurt, bad.

Pulling out her phone she sent a quick text to Erin before following Marcel towards the cars. When she had spoken to Intelligence the previous night, she hadn't told them about her dealings with Frank, she hadn't known why. All she knew is that when she first began this cover, Marcel was kind and compassionate, he made her feel worth something but now, she just felt like an embarrassment.

It had just struck midnight and the whole intelligence unit were currently preparing for the bust. They just hoped it was the final one. Erin had received a text from Ana confirming the time just after 10pm and no one had heard anything since which was a concern but they knew the possibility of Ana being watched like a hawk.

Jay was sniper and was cleaning and assembling his gun placing it in the case along with the extra ammunition whilst Erin was talking to Ruzek in the corner of the room as they checked their own guns and made sure their vests were strapped tight. Looking up, she watched as Antonio paced the roll out room. It was clear that this situation was really getting to him and he had been starting to ask questions, questions that she couldn't answer.

"Let's move." Voight shook his head as he began briefing everyone "Everyone goes home tonight" He reminded before they headed to the warehouse in their respective cars.

"I have a visual on the suspect. Seen entering the west of the building" Lindsay informed. She stood with Antonio and Halstead who stood behind Voight's SUV. Halstead began to check his sniper and suited up ready to head to the roof.

They had been the set the task of looking for the dealer that Vince and Marcel were using and they knew that Vince was alternating between the drugs business and trafficking industry. Whilst they did that Atwater and Ruzek had been looking out for Marcel's arrival. Marcel only ever appeared at the 'big deal', he wasn't going to get his hands dirty either.

"Do we have eyes on Marcel?" Voight questioned the detective and officer who waited in their car searching for movement. "Is Ana with them?"

"Affirmative, they've just pulled up. Waiting for them to get out of the car." Atwater confirmed as the radio crackled to life. "We've got a problem Sarge" His voice suddenly rose a few notches. "It doesn't look like she's walking in with free will. She's been pistol whipped for sure"

The young woman was shaking and was barely able to stand on her own two feet as she was pushed from the car. Blood dripped down the side of her cheek and she was trying to stand up tall. The two men stood behind her were really close.

Jay turned to Erin. "I thought she said she'd never met Marcel?"

Antonio took the binoculars from Erin and looked through them. Something caught his eye and he was instantly alarmed. "The suspect is armed. I repeat the suspect is armed." His voice was also heard alerting the team to prepare for any possible incident that may occur.

"Halstead. I want you on the roof. Now!" Voight barked his orders. He ran towards the building positioning himself at the marked station and set up the post.

"In position" He confirmed, he concentrated on the windows. Placing a firm finger on the trigger whilst holding his weapon securely.

"Have you got the shot?" Voight called over the radio.

"Negative" Jay sighed still looking for the shot. It was unclear, there were girls lined up with two men holding the balloons that had been filled with different drugs. It had been a very clever way to transfer these substances but not one that would usually be associated with 'business men'.

Turning to Olinsky, he shook his head. This wasn't looking good. Voight was about to respond when the sound of a gunshot echoed through the warehouse and towards the dock. "Move in." He demanded over the radio.

The detectives followed their direction, each moving from their positions they burst through the warehouse door. "CHICAGO PD!"

PLEASE READ AND REVIEW :) AND LET ME KNOW YOUR THOUGHTS