Hey, hi, hello. This is just a quick one-shot based off 4x19 and what could have happened if it wasn't just Kim that had been drugged. I've seen a couple of people trying this out, so I thought why not. Please let me know what you think.

It didn't matter how many times Erin had gone undercover in the past few years, she still got the same anxious, twisting feeling every time. It was as though her brain couldn't let go of the thought that things could always go wrong quickly. She always managed to keep it under control though. It was her job. Erin might have felt vulnerable but she wasn't weak, and she wasn't about to let something like this be the thing that defeated her. They might have been in a car with rapists, but the guys weren't violent criminals. There wasn't much that they had to be worried about as long as they followed their orders. Erin couldn't get the feeling in the pit of her stomach to go away.

The brunette knew that if that was how she was feeling, then Kim must have been just as nervous. Maybe not. It was different for her. It was personal. They had maintained eye contact for most of the car journey, even when they were feigning drunken conversation with the two men in the front. By the looks of things, they had been more concerned with the prospect of having two women in their apartment on a Saturday night than what they had been doing in the back seat.

Erin gave Kim a final look before they stepped into the apartment. She knew that the younger woman didn't need any reassurance from her. She'd come out with the intention of finding the bastard that had attacked her sister. Still though, Erin knew that it couldn't hurt. She watched carefully as the men walked in front of them, leading the way, careful not to let her guard down at all in case one of them turned unexpectedly.

"Is this your place?" Erin asked, flashing them a quick smile.

One of the guys answered as he slid off his jacket, taking a few steps away from them both to throw it onto a table in the corner of the room. "I share it with a few friends."

Who are conveniently not here, Erin couldn't help but think.

"Wait," Kim laughed, pretending to be confused as she looked around the room. They both knew that there wasn't going to be a party waiting for them there as promised but they had to at least act slightly surprised. "Where's the party?"

"We are the party," he replied, exchanging a quick look with his friend. "We've got drinks, music..."

Erin giggled at his words. It was totally unlike her. The sound was almost foreign to her but it was all part of the act. Kim followed suit. The older cop looked around the room slowly, making sure that she didn't make either of the men in front of her suspicious. The last thing that they needed was for their cover to be blown before they even had the chance to find information. Erin knew that she would be able to take one of them on if she had to, she just wasn't sure how well off either of them would be when she walked away from it.

They dropped their clutches onto the kitchen counter, discretely making sure that the camera was facing outwards enough so that the rest of the unit would be able to see what was going on in the apartment. They placed their cell phones down next to them, wandering over to the couch that was by the door. Erin glanced over her shoulder as she followed Kim. She could have bet money on one of the guys lifting them both but she wanted to know for sure that they had actually done it. And she was right. Though she wasn't sure why the sight caused her stomach to turn. It was exactly what they had expected to happen.

Kim lowered herself down onto the couch next to Erin, watching the guys in front of them just as intently as her friend was. They had taken themselves into the kitchen and their backs were turned away from them, giving the women another opportunity to communicate with each other. It wasn't like the guys were being discrete. Erin wondered how the other women that had fallen for their charm hadn't realised that something wasn't right.

"What are those?" Erin asked as they walked back over, placing two shot glasses down in front of them with a smirk. She could only imagine what concoction they had mixed together.

They both answered at the same time, overcompensating ever so slightly. "Kamikazes."

Even without instructions from Voight, Erin would have been hesitant to touch anything that had been given to her by guys like that. If the way things had gone with Nicole and her friend were anything to go by then there would be far more drugs in one tiny glass than anyone could handle. What was it again? Ketamine.

"Aren't you going to have one?" Erin spoke again, trying to stall for as long as she could. Kim could tell that the detective was getting antsy. It wasn't often that the older woman was the one that started to panic but Kim could see it in her eyes. It didn't phase her though. She was keeping her cool. There was only one thing that was on her mind. Besides, the unit were watching their every move. There was nothing that they had to worry about.

"We just did. They're awesome."

The detective looked to Kim. They couldn't drink them. Voight had given them strict orders not to. Hell, Erin knew that it wouldn't end well. She knew what was in them. She let out another laugh. "I don't know." Kim followed suit but her words seemed to be lost in her throat. Erin was begging her silently to say something. Anything. "I'd rather smoke some pot. Do you guys have any?"

The dark haired guy sat down next to them, placing a hand on Erin's thigh. It was higher than she was comfortable with but she forced herself not to move away from them. "Do it for me?" Erin turned to look him in the eye, biting her lip slightly with a small smile. She could see how impatient they were becoming. She needed them to know that they were still into it.

"Do you girls want to party or not?"

Erin turned back to the other cop. Their options were running out fast. Except, Kim wasn't looking back at her. The shot glass was already halfway towards the other woman's mouth, and Erin couldn't do anything about it.

"Are you okay?" Erin asked, trying to be nonchalant. Kim grimaced slightly at the taste but smiled as soon as she had swallowed it.

Kim smiled. The worry in her eyes evident. "Yeah."

"How about you?" the guy next to Erin questioned, squeezing her leg lightly as he spoke. She wasn't sure what to say to him.

"I don't really feel like it."

She could see the disappointment in his eyes slowly turning into annoyance. "What's wrong with you? If you don't want to have fun with us then get the hell out of here."

Erin froze. She wasn't sure what she could do. She couldn't leave Kim in the apartment by herself with the two creeps beside them, but she knew how things could end if she followed her friends lead. The brunette took a deep breath. Voight was watching them. Jay was watching them. They would both be okay. "Fine."

She couldn't help but wince slightly as the liquid met her tongue. She wasn't a stranger to shots by any means but she wasn't sure what alcohol it even was. There was something about it that seemed to burn more than anything she'd drank before. Maybe that was because she knew what was really in it. It was as though she could feel it trickling all the way down to her stomach, seeping into her bloodstream with every passing second. The brunette knew that it was only a matter of time before the drugs started to kick in in full force.

Erin hadn't wanted things to go this way but what was she supposed to do. She'd promised herself that she wasn't going to touch anything like it ever again after her 'sabbatical'. She'd tried everything that she could get her hands on then. Or anything that had been given to her by her mother.

She looked to Kim again, plastering on the same sickeningly sweet smile that she had before. She wanted to throw up.

"See," the one closest to Kim said. Both cops looked towards the man, seeing the pleased expression that had taken over his face. They were trying not to let it contrast too much with their own. "I told you that it was good."

Kim stood up suddenly, pushing herself off of the couch with a wobble. "Do you have a bathroom that I could use?"

"Yeah, it's right down the hall."

Erin watched as the guy waited for a few moments before following Kim to the 'bathroom' - if they made it that far. She knew that her friend could hold her own - they had a plan - but she couldn't help but feel slightly worried. The dark-haired guy next to her was silent. He slid his arm carefully around her waist, smiling politely at her when she looked to him. Erin knew what he was waiting for. The moment that she seemed even slightly incapacitated, he would be all over her like a vulture.

Erin just hoped that Jay was on his way already.

She was starting to feel it now. It was only slight, but she knew it was there. It was definitely ketamine. Erin had used it before. Too many times than she wanted to admit. It had never been one of her favourites but somehow it always seemed to be one of the ones that made its way to her the most. She recognised the feeling all too well. It had only been a couple of minutes since she had downed the shot. It was like her mind was already starting to slip away from her body. Erin knew that it could only get worse.

She could hear him saying something but she couldn't make out what it was. His voice was a faint noise in the background. It was like she was floating underwater. Like she had ducked her head under the bathwater and someone was rattling on the door. Her fingers were the first thing that started to feel numb. As though they weren't a part of her. It made the panic start to rise in her chest. When his own started to travel up her body, she couldn't find the strength to push him away. The more she wanted to the more it felt like her arms were being pushed down by some invisible force. Erin didn't want him to touch her. He didn't want him near her. But there was nothing that she could do about it. All that she could think about was Jay. They weren't even together anymore but somehow her mind always managed to wander back to him.

She heard his call before she could see him. It was loud and clear, even with the haze that was clouding her mind. It pierced it effortlessly. Erin felt a weight being pulled off of her, watching as the guy that had been on top of her was thrown to the ground. Her partner's face appeared in front of her own, a worried look etched all over his face. It wasn't often that she saw genuine fear in his eyes like that. As though something had actually happened.

"Jay." Erin wanted to say something better to him, but all that she could seem manage was, "Thanks." It was as though her words were taking ten times as long to make their way from her brain to her mouth. The brunette knew that was all that needed to be said though. She was just glad that he was here.

Her eyes followed the rest of the team as they moved down the hall, breaking away from Jay for just a second. She tried to push herself up just like Kim had done a few minutes earlier but her limbs felt dead. Jay grabbed her before she had the chance to fall to the ground, pulling her up and guiding one of her arms over his shoulder. Even with her partner's support Erin still felt like she was swaying. She tried to take a few steps in the direction that the rest of the guys had but Jay stopped her before she could even take her first step.

"Woah there," he said, bending down and bringing his free arm behind her knees - scooping her up into her arms. "You can barely even walk. We have to get you to Med to get your stomach pumped."

Erin tucked her head into the crook of his neck, taking a deep breath in as she tried to get away from the swirling that was going on in her head. She just wanted it to stop. "M'kay." She opened her eyes momentarily just as they were leaving the apartment, catching the slightest glimpse of Kim behind her. The younger woman seemed just as unsteady on her feet as Erin had been, but unlike the detective she was getting by walking with the support of Adam. He looked just as anxious as Jay had. The only thing that Erin's eyes were drawn to though, was the dark red shade that covered Kim's hands

Erin hoped that she had given the bastard what he deserved.

It had only seemed like a few seconds since Jay had picked her up. It was as though she had blinked and suddenly they were outside. Erin wished that she could feel the cool Chicago air on her bare skin but she couldn't feel anything at all. Her partner lowered her down carefully until her feet made contact with the ground so that he could open the door to the back seat of his car. Jay pushed her back gently onto the seat until she was laying down completely, closing the door quickly as soon he was sure that she was okay. Erin wanted to protest. She wanted to tell him that she was fine and that she could sit up in the passenger seat until they got to the hospital. There was nothing wrong with her. But her eyes felt heavy and there was a part of her that wasn't even sure if she was breathing or not.

Erin wanted to panic. Her head was telling her that she should have been panicking. She should have been freaking out that she had ingested so much of the drug, but all that she could feel was calm.

Her eyes flickered open again as she heard another voice in her ear. She couldn't move and it felt as though the room around her was spinning, but she didn't feel dizzy. She felt like she was flying as high as a kite.

"Erin," the voice spoke again. "Can you hear me?"

She wanted to answer it but she couldn't. She couldn't even nod.

It was Will. She recognised it now. "Okay, Erin. This is going to be pretty uncomfortable but I need you not to fight it. I need you to try and swallow the tube as we feed it down your throat."

The next time that Erin woke up, all she could feel was a pounding in her head and an aching in her throat. The memory of what had happened were the first thoughts that flooded into her mind. She could remember taking the shot, and she could remember Jay holding her close to him, but that was about it. The only thing that she wanted to do was throw up. She blinked a few times, adjusting to the light in the room.

"Hey, kiddo," a gruff voice greeted her. "You had us worried for a second there."

There was a part of Erin that was disappointed that it wasn't Jay sitting beside her. "Sorry."

Hank smiled. "Don't be. You and Burgess are both fine. That's all that matters."

"I should have-"

"You did what you had to do," the older man interrupted her before she could go any further.

Erin sighed. She would do it again if it meant that Kim's sister finally got some justice. She was just glad that nothing serious had come out of it for either of them. They were lucky. It didn't take her long to crack when silence began to fill the room. "Is...um..."

Voight chuckled. He knew that there had been trouble in paradise the past few weeks for the pair. He would have been the first one to make Halstead pay if it had ended in tears, but he had seen how worried the younger man had been while they were waiting to hear about Erin. He knew that his heart was in the right place. "He's waiting patiently. I couldn't get him to go home." Erin couldn't help but smile slightly to herself as she heard the last part. "I'll see you tomorrow, okay? Get some rest."

"See you soon."

Erin watched as he left the room, suddenly finding herself alone. For a second she wasn't sure whether or not the older man was going to send Jay in or not. She should have made herself more clear. She should have asked for him specifically. Her mind was put at rest, though, when her partner's head popped through the door, making sure that it was okay to come in before he actually did.

"Hey," Erin said, the corners of her mouth inching upwards as she saw him.

"Hey." Jay took a few steps towards the bed, lowering himself down onto the chair that Voight had been sitting on a few minutes earlier. "How are you feeling?"

"Not so hot," she replied. She felt better now that he was there. She always did.

He chuckled, leaning forwards so that he was a little closer to her. "Yeah, getting your stomach pumped will do that to you."

She laughed softly, though regretted it immediately as a sharp pain seared through her body. "I don't recommend it."

"Will said that they'll be able to discharge you soon," Jay said. Erin let out a small sigh of relief at his words. There was nothing more that she wanted to do that slide into her own bed and forget that any of it had ever happened. He licked his lips. She could tell that he wanted to say something else, a silence forming between them all of a sudden. "But that you should have someone with you when you go home."

She shook her head. She didn't want to ask anymore of him. She tried to change the subject slightly. "I'll be fine. Besides Voight's already on his way home and I don't want to call him back."

Jay paused. "I was thinking that I could take you home. I mean, I don't want to impose or anything. Especially with what's been going on recently with us."

Erin's eyes met his. "It's been a long day, Jay. I'm sure the last thing that you want to do is be babysitting me."

"Honestly," he continued. "I don't mind. It would put my mind at rest. Seeing you like that tonight wasn't exactly easy."

It was true. It was one of the toughest things that he'd had to endure in a long time. He'd been there when she had been getting her stomach pumped. He'd watched the tube been forced down her throat as she struggled to even keep her eyes open. He'd watched her cough and heave, and it made him feel sick. It had been uncomfortable enough for him. Jay could even imagine what it must have felt like for Erin.

She smiled again. "Okay."

He smiled back. "Good."

There was a pressing thought at the back of both of their minds that told them it wasn't a good idea. Things were still fresh between them.

"Jay?"

"Yeah?" he replied.

Erin reached out a hand, lacing her fingers through his just like they used to. "Thank you."

She would take her chances.