Hey guys! So I love Chicago PD, can't wait for it to come back for season two. I loved season one and the finale was one of the best episodes for me. I do however have a different little version in my head of how it could have went down so I thought I'd post it here and see what people thought of it! It'll probably be a few chapters long but here's the first part.

Jay stood outside the door with Ruzek and the CI, waiting for someone to open it. He wasn't nervous, this is the sort of police work he loved; being undercover, being out in the field. It might sound arrogant or cocky but he was good at it. He liked doing what he was good at. He liked always being that one step ahead of the perp and when he was undercover, he always was because they didn't know his true identity. It was exciting. He could control the play.

All that was shot to hell when the door finally opened. Jay couldn't possibly have prepared himself for what he was about to see.

Charlie.

Erin's old... friend? He didn't know, hadn't quite been able to get a read on him.

Charlie looked momentarily shocked when he saw Jay at the other side of the door, he knew exactly who he was. He hadn't forgotten the look on his face when Erin told him to leave at the police station the other day, he knew there was something going on there.

The shock, however, was soon replaced by a sleazy grin and when Jay followed Charlie's eyes backwards, he understood why.

Erin. There she was, eyes wide, frozen to the spot. It was an unfortunate time for her to stop what she was doing, she was stood there in her bra, holding her top, jeans undone. It didn't take a genius to work out what had just gone on.

"You're Lindsay's police friend, huh? How did you know she would be here?"

At the mention of the word police, the CI immediately began to panic. How did Charlie know they were police? What would happen to him now? He considered running but Ruzek's hand found it's way around to his arm and he had no option but to wait it out, see what would happen.

Jay didn't really know what to say. His eyes were locked with Erin's but he couldn't read them, he couldn't work a single thing out. Usually a look between the two of them spoke a thousand words that they both understood but not this time. He supposed he didn't really need any words to explain to him what had happened, the evidence was right in front of him. He was a cop after all.

Ruzek looked at Jay, wondering if he was going to answer the guy inside the flat. He didn't have a clue what was going on. He didn't know who the guy was, didn't understand why Erin was inside looking as if she'd just seen a ghost. He just focused on keeping the CI with them, hoping maybe that he could provide some answers.

"I think there's been a mistake, we should go."

It was all Jay could manage to say, he knew there was no point in attempting to make a deal with Charlie now, they'd been made, he knew who they were. He turned to leave, nodding at Ruzek and the CI to follow him, taking one last look at Erin before he moved.

Something about his movement sprung her into action. She zipped up and buttoned her jeans then quickly put her top back on. She grabbed her jacket from the couch and pushed her way past Charlie.

"Halstead, I'm coming with you. Wait up."

Her voice was flat, Jay again could not read it. Everything was off, he didn't know why.

Charlie grabbed Erin's arm before she could leave the flat, pulling her back slightly.

"Not even a kiss goodbye? That's a little bit rude, Erin. Remember what I said."

He kissed her gently on the cheek but he wasn't looking at her, he was looking directly at Jay, hoping to get a reaction. He hadn't known that he was going to turn up but Charlie was good at thinking on his feet, he knew he could use this situation to his advantage.

Jay glared back at Charlie, wanting nothing more than to grab Erin away from him and punch him square in the face. It took all the will power he had to stop himself from doing it. Instead he settled for the glare, refusing to be the first to look away. If he had looked away, looked at Erin, he would have saw the uncomfortable look on her face, the silent pleading in her eyes. She hadn't wanted Jay to see any of this. She needed to get out of there, get away from everyone and find some place she could just go and think, attempt to get her head straight. Erin pulled herself away from Charlie and walked past Jay, carrying on down the stairs with Ruzek and the CI. She hoped they wouldn't ask any questions, she didn't have the answers.

Soon all four of them were outside, leaving Charlie upstairs to wonder what Erin would do next. She would do what he had told her to, he hoped, she always did.

Erin attempted to walk away from the other three, she didn't say bye, she didn't say anything, she just sped up her walking and hoped they wouldn't question it. Ruzek couldn't, he couldn't let the CI go but Jay, there was no way he was letting Erin off the hook this easily. He threw his car keys at Ruzek, not taking his eyes off his partner. She wasn't that far away yet.

"Take him back to the station, Adam. I'm going to catch a lift with Lindsay."

Ruzek nearly argued back, he wanted to know what was going on just as much as Jay. Something inside him told him just to do as he was told though, it may have been the determined look on Jay's face.

"Oh and Adam? Not a word to anyone about this. Especially not Voight, ok?"

Ruzek nodded, knowing of the closeness between Voight and Erin, just like everyone else in the unit. He didn't understand it but he knew that Voight would not want to hear about Erin hooking up with criminals, that much he understood.

Jay nodded back at Ruzek and ran to catch up with Erin. It didn't take him long. He caught up with her just as she was at her car. He stood behind her and watched as she struggled to get her keys out of her pocket. Her hands were shaking too much and inevitably she dropped them. She was too slow to pick them up, Jay already had them in his hand.

"I'm driving, you're talking."

She didn't have it in her to argue. She didn't really think she was capable of driving at this moment in time anyway. Jay sat down in the driver's seat and watched Erin as she walked around the car to the passenger side. For a split second he thought she might run but relief washed over him as she opened the door and sat down. She didn't look at him, she kept her eyes to the floor. He started the car and began to drive, it didn't matter where to.

After a few minutes of silence, he couldn't take any more.

"So are you going to tell me what just happened there?"

He heard her sharp intake of breath as if his words had pulled her out of her thoughts. She gazed over at him hesitantly, hoping his eyes would be on the road and she wouldn't have to look right into them. Thankfully, he was looking straight ahead.

"We're both adults, Halstead. I'm sure you can figure out what just happened."

There was no humour in her voice, no emotion, no anything. Once again, she was flat. Jay looked over just as she was looking away. Something was off but he couldn't figure out what. Was this embarrassment that he'd practically walked in on her and Charlie? Was it guilt because she was supposed to be with Severide and Jay knew this? Was it sorrow because even if she wouldn't admit it, she knew there was something between them and maybe now she'd just ruined that?

"I don't get it, Erin. You didn't seem happy to see him the other day. Now you're... you're visiting him in the afternoon for a quickie?"

Erin used every bit of strength she had left not to be sick in the car. How the hell had this happened? How had Jay, the last person she would have wanted to have seen at that moment, been the one to walk in and see what he had seen?

"You don't know anything about him. Or me, for that matter. You don't get to judge."

She spat out her words, hoping maybe that if she appeared angry enough then Jay would just let his go, drop it as if he hadn't seen a thing. She still had to find out why he turned up at Charlie's with Ruzek and some random guy but that was all she wanted to talk about, nothing more.

Jay saw her anger for what it was, a show to deflect the attention away from what had gone on. He only wished he knew what really had gone on. She was hiding something, that much he did know.

"I'm not judging, Erin, I'm just confused."

He saw the look on her face which showed that she didn't believe him and he realised that maybe she was right.

"Ok, maybe I am judging, maybe just a little bit. Ruzek and I are expecting to find a guy there who wants to make a deal for some things related to the murder of the security guard this morning and the stolen explosives. The CI takes us to that flat, promising us that the guy is there. The door opens and it's Charlie... that much I could probably have believed but then there's you, in the background, putting your clothes back on? What the hell, Erin?"

The realisation of why Jay and Ruzek had turned up at the door hit Erin like a tonne of bricks. She barely even registered what else Jay had said. Her head hurt with all this new information, she couldn't think straight. She pulled her hands up to her head, rubbing circles on her temples hoping to relieve the pain.

Jay glanced over at her when she didn't reply and saw her massaging her head. With her hands up, the sleeves of her top fell down slightly and he could see her wrists. He could see angry, red marks all over them. Finger marks. Thoughts started plaguing his mind... had she not wanted to do it? Had he forced her? Is that what he was sensing from her, why she was so off?

"Erin..."

He spoke softly as his finger lightly touched her wrist. She looked down and immediately saw what he could see, marks that she hadn't even known were there. She quickly pulled her sleeves down and tried to remain calm but to no avail. She found it difficult to catch her breath knowing that he was looking at her, waiting for her to speak from the other side of the car.

"Stop the car."

That's not what Jay had expected her to say.

"No, Erin, we need to talk about this. Did Charlie-"

"I said stop the car! Now!"

She cut him off, unable to hear him finish the sentence. She felt sick. She needed out, needed air.

"No way, Erin. You think I'm going to stop the car so you can run off and avoid talking about this?"

"Jay you need to stop the car now if you don't want me to be sick all over you."

He slowed down slightly and looked over at her to see if he could read her expression.

"Please?"

Her face was pale, void of any colour. Her hands were shaking and her breathing was erratic. He stopped the car and watched as she opened the door, stood up outside and emptied the contents of her stomach. Her actions confirmed it to him, she didn't even have to say it.

Charlie had raped her.