Please read : Sorry for the delay, I was in England for three days and had no access to the internet.

I had my own take of Charlie's story and I actually laughed when I watched the last Chicago PD's episode. I had written most of this chapter before it was aired so it's actually funny because of the coincidences. You'll understand ;)

That finale was just...ugh. I hate the writers right not, they can't do this to us. So I've decided to choose a different route and ignore what happened in the finale. I might do a one shot of the aftermath of the finale once I've watched Chicago PD's finale. Would you guys like that? Anyway, enjoy !

"Erin," Kelly gently said, shaking her awake. She moaned and brought her hand up to shield her eyes away from the harsh sunlight. It was Sunday, and Erin never worked on Sundays, except if they were in the middle of a big case. "I need to go to work. I'll see you on Tuesday?"

"Mmm," She moaned. She coughed heavily, causing Kelly to frown.

"Are you sick?"

She shook her head and forced herself to open her eyes. God, who had turned on the lights? "I'm never sick," She managed to get out, while another fit of cough assaulted her.

"Right," he drawled out. He placed the back of his hand to her forehead and his frown deepened. "You have a fever."

"Do I?" she asked absentmindedly.

He chuckled, "Just stay in bed okay?" He walked out of the room and returned a minute later with cold medicine and a glass of water. "Just take these when you wake up."

She forced a teasing smile, "Alright doc."

He knelt down next to the bed, "I need to go to work."

She nodded and wrapped her arms around his neck, keeping him right where he was. "M'okay. Be careful."

"I will. Rest up," he said. He bent down to press his lips to her in a soft kiss. "Love you."

He heard a mumbled, "Love you too." as he crossed the threshold of her bedroom and chuckled.

Kelly sighed as he left her apartment. He was glad everything had gotten better between the two of them, even though they had just got through a rough patch.

3 weeks earlier

Severide was waiting for Lindsay to come back from work in her apartment, lounging on the couch while nursing a beer, the football game on. He heard a knock on the door and frowned. Was she expecting someone?

He placed his bottle on the coffee table and stood up, walking to the door. He opened it and stared at the man before him.

"Can I help you?" he asked, confused. The man looked as if he was in distress.

"Is Erin here?"

Severide shook his head, "No, she's not. Who are you?"

The guy ran a hand through his hair. "I'm an old friend. When will she be here? I really need to talk to her."

Kelly found him weird, like he was on edge or something. He didn't like it. "I don't know. Sorry."

The guy sighed. "Well can you tell her I stopped by, and that I really need to talk to her?"

"I will if you give me a name,"

"Charlie. She'll know. Tell her to call me, alright?"

Severide was ready to close the door now. "Yeah, sure." Charlie turned around and started walking down the hall as Severide shut the door.

When Erin came home half an hour later, he had resumed to his previous position on the couch. She smiled when she saw him, and got rid of her leather jacket, walking toward the couch with her own beer. She bent down and kissed him.

"How was your day?" she asked, snuggling into his side. He looked at her and put his hand on her thigh.

"Same old. Some guy came here, the name's Charlie, asked you to call him,"

He saw her smile drop as soon as he said the name and his eyebrows knitted together. She sat up and sighed.

"Who is he?"

She shrugged. "Just an old friend who's back in town. I told him I would call him but I haven't had the time to do it yet."

He felt there was something else to the story but decided not to push it. "Alright."

"You want another beer?" she asked as she moved to get up. He nodded. She grabbed the empty bottle and walked to the kitchen, leaning her forehead against the fridge, taking a deep breath. She felt her phone buzz in her pocket and pulled it out.

Incoming call: Charlie

She clenched her teeth and hit the ignore button, putting her phone in silent mode and setting it onto the counter. She was definitely not in the mood for this. He had stormed back into her life when she had finally allowed herself to leave her past behind her and be happy.

A knock was heard on the door and Erin jumped slightly as she had been lost in her thoughts. She heard Kelly shuffle from the couch.

"Probably the Chinese food. I'll go get it." She nodded, watching him grab his wallet and head for the door. She was able to breathe out only when she heard that it was indeed the delivery man and not Charlie. She would have not been ready to get into that. Severide came back into the room and set the paper bags onto the counter. "Before you ask, no, I did not forget to get your eggrolls," he teased and she tried to smile as best as she could.

"Thanks babe," She walked to him and kissed his cheek. "I'm gonna change, I'll be right back."

"Alright. Wanna watch a movie?"

"Sure!" she shouted from the bedroom. "As long as it's not something as cheesy as The Notebook!"

Kelly laughed, shaking his head. "No wonder you and Shay get along so well."

She sneaked her head into the room, "Oh, I didn't tell you? We were planning to elope together. Sorry babe."

He chuckled, "Ha, ha. You would come right back to me, Shay is too messy for your taste. You should see her bedroom. Looks like a tornado sweeps through every damn morning."

She padded back into the room barefoot and only wearing the tank top and short shorts, both items not quite meeting, revealing some of her skin. It made Severide forget all about Chinese food and he was suddenly hungry for something else.

"Well, aren't you full of yourself?" She said, placing her hands on his chest, as his rested on her hips unconsciously. "Shay's hot."

He rolled his eyes. "As much as I love her, can we stop talking about my roommate?"

"You're the one who brought her up," she teased.

"Well right now," he bent down to peck her lips, "I've got something else in mind." He picked her up and she squealed, circling his waist with her legs.

"What about the food, mister?"

He didn't say anything and carried her to the bedroom. The food could wait.

When Erin got out of the police station that night, she was not expecting Charlie to be waiting for her outside. Just as the time before, Jay was next to her, giving her a worried look.

"It's fine," she said; "You go home, I'll see you tomorrow."

Once Halstead was out of earshot, Erin sighed and put her hands into her pocket, staring at her old friend. "What do you want, Charlie?"

"Can we have dinner sometime? To catch up?" he asked, looking hopeful. Erin rubbed her forehead.

"You're not even supposed to be here in Illinois, Charlie. You and Voight had a deal. If he finds out you've contacted me again he won't go soft on you."

He rolled his eyes. "I can handle Voight. I came back for you, that's all. I missed you. And you said you would talk to Annie, weeks ago! You said you would be in touch, but you never called me or answered your phone."

Erin took a deep breath. "She doesn't want to see you, Charlie, I'm sorry."

He took a step back and frowned. "What? N-no, that's not possible, you're lying."

She shook her head, "I'm not. I'm so sorry."

He waved her off. "Just forget it. I trusted you. I need to see her."

"You can't. End of the discussion." She told him firmly, and walked away.

Jay Halstead was on a mission. As soon as his shift was over, he stopped by Firehouse 51 on his way home. He got out of his car and shut the door, burying his hands in his pockets as he walked to the building. He saw some of the guys from Truck and greeted them.

"Hey guys, sorry to interrupt," he said. Casey raised his head. "Is Severide around here?"

"Yeah, he's inside," Casey said, pointing to the common room.

"Thanks," he walked in and quickly spotted Kelly at the end of the table, reading the news. "Hey Severide. Can I talk to you for a minute?"

Severide looked at him in confusion but followed him down the hall anyway. Jay stopped once they were out of earshot and turned to face him.

"Look, I know you and I didn't start off great but I know we have one thing in common, is that we both care for Erin."

"What's going on?" Kelly asked, crossing his arms over his chest.

"Has she ever mentioned a guy named Charlie?"

"Yeah, he stopped by her place a week ago. She said he's just an old friend."

Jay sighed. "Look, I think this guy's bad news. He's from the time when Erin was in the street, before Voight. I don't think it's good that he's around her. He was at the station waiting for her earlier and he calls non stop. So just, look out for this guy, okay?"

Severide nodded. "I'll talk to her. Thanks for the warning, man."

Jay patted his shoulder. "Yeah, no problem. Have a good night."

Erin and Kelly were cleaning up after dinner, when Erin's phone buzzed on the counter. She hit ignore and Kelly decided to take a shot.

"Was that Charlie?" he asked. Erin froze and turned to look at him.

"What?"

"I know he's been calling you. A little more often than a friend should call if you ask me."

She set the plates in the sink and crossed her arms over her chest, glaring at him. "What's this about?"

Kelly sighed and rubbed the back of his neck. "Look, I can feel you're shutting me out, you're not telling me anything and you're keeping me away. If I recall, the last time we had a fight, you said that we would tell each other what is bothering us. Clearly, something is bothering you, and I wanna help."

Erin could feel her walls building up around her. The past was the past, she did not want to talk about it when she had spent so much time trying to get away from it. "I don't need your help, I'm fine."

"I'm worried," he said, more gently this time. "Halstead said that he's been around the station and-"

She looked at him sharply. "Hold on, you spoke to Halstead about this?"

"He came to me. He said I should watch out for this guy, that he was bad news."

Erin gritted her teeth and took a deep breath. "I don't need you watching out for me, Kelly. I'm handling it."

"Handling what, exactly?" he asked, then pursed his lips. "I don't know anything about what's going on with you and that guy. Because you won't tell me anything! I feel like you're in trouble and you won't accept my help. I'm just watching you shutting yourself out whilst I'm on the sideline!"

Erin wet her lips and tucked her hair behind her ear. "Charlie and I were in the street together when I was a teenager. He was my drug dealer."

Severide's eyes widened. He did not expect that. "Your drug dealer?"

"Yes. And my best friend. When Voight took me in, he also took care of getting Charlie to rehab, on one condition: that he would leave the state as soon as he was clean, not to be a bad influence on me. I hadn't seen him in ten years, and then he's back... it's like my past is catching up on me."

He could see her defensiveness come down little by little, and he moved closer until he stood in front of her. "What does he want?"

"He was in love with a good friend of mine, Annie. Then they had to break up when he left, and she was pregnant. She didn't want to leave Chicago because it was her hometown, but Charlie had made a deal with Hank and... you know what happens when you make a deal with him," It was the truth, even if it was hard for Erin to say it out loud. "So he never got to see his kid, because Annie kept the baby, who's now a ten-year-old boy. Since then, she found someone else and built a life. She doesn't want to see him, and she doesn't want Sean to see his dad either."

"Wow," Kelly muttered. "That's some messed up story."

"Yeah. I'm sorry for shutting you out," she whispered, her green eyes meeting his blue ones. "Talking about my past has always been difficult."

"It's okay," he rubbed her arms and kissed her forehead. "Just promise me you're not in danger."

"I'm not, I promise. I'm handling this." She wrapped her arms around his middle and rested her head against his chest. "I'm sorry for yelling."

"Me too," he murmured against her hair. "We should probably go to bed."

"Yeah, today's been a long day."

Present day

Erin was woken up by a fit of coughs a few hours after Kelly had left in the morning. She sat up, sweating heavily and grabbing the glass of water from the bedside table to soothe her aching throat. Her head was pounding, so she quickly swallowed the medicine Kelly had left next to the glass. It took her a few seconds to realize that someone was knocking on her door. She got up, slightly dazed from the movement, the room spinning around her. With shaky legs, she moved through her apartment and got to the door before opening it.

She sighed when she saw it was Charlie. She hadn't heard from him in two weeks, and there he was, on her doorstep.

"What do you want, Charlie?"

He walked into the apartment without being invited in and started to pace. Erin closed the door behind him, turning around and folding her arms across her chest.

"I need to see her," he started. "I need to see Annie, and my son."

Erin pinched the bridge of her noise and gritted her teeth. "Don't start. I've already told you, she doesn't want you involved in his life. He has a man he considers as his dad and who is a wonderful husband to Annie."

Charlie shook his head and laughed curtly. "You owed me. I thought you were my friend,"

"I don't owe you anything," she said coldly. She leaned against the wall as her legs were getting weaker under her weight.

"Like hell you don't," he spat out. "I helped you when you were at your worse! I pulled you out of your misery, gave you a reason to live, Erin! Is that how you thank me?!"

Erin pursed her lips, deciding that staying calm was the best option. "You were my drug dealer. You pulled me out of my misery by giving me a new type of misery and it took me months to get clean. I don't owe you anything."

Charlie fumed and clenched his fists, "I can't believe this. Is Voight the one who turned you in such a bitch?"

Erin ignored the insult and frowned. She got closer to him. His hands were shaking and his eyes bloodshot. "Did you take something?" The fact that he did not answer was proof that he had. "God Charlie, you've been clean for years. And now you're in Chicago and on drugs. Perfect."

He got closer to her until he was right into her face. "Call Annie."

"You should go, Charlie." Erin muttered, pushing him away. She could smell the alcohol in his breath.

He grabbed her arm roughly and pushed her into the wall, "Call her!"

Erin did not back down, although she was having trouble staying on her two feet. She shot him a look and straightened. "Let go of my arm and get out right now."

"Call her!" He let go of her arm and slapped her hard across her face with the back of his hand. Added to her dizziness, the blow caused Erin to collide into the wall behind her. Before she was able to react, he had pinned her against the wall, his forearm against her neck, pressing against her throat.

Erin thought about where she had left her gun. At its usual place in the drawer of her bedside table, in the other room. She looked at him with sadness in her eyes. "What are you gonna do, Charlie? Kill me? After everything that we've been through together, is that how you see the end?"

"Shut up," he bit out. His arm shook against her neck, adding more pressure. "I-I need something. Give me something."

The lack of oxygen in her lungs made Erin's vision swim. "I don't have anything. Y-you're hurting me." She felt light headed, and tried to push him away, but her body wouldn't function. He had completely snapped out of his mind, she did not recognize him.

"You promised me you would help me!"

She saw his fist coming right at her before she felt the collision with her cheekbone. Her head hit the wall, causing her vision to get blurry, black spots surrounding her. "Stop!"

He punched her again, her legs giving out under her weight. She hit the floor and he kicked her in the stomach. Once, twice, three times. Her brain was screaming at her to hit back, scratch or pull at anything she could reach, but her body wouldn't budge.

The Erin Lindsay who was often seen as one of the strongest woman within her circle of friends, laid there, not able to move, rolled up in a ball on the floor. She felt powerless.

Finally, the kicking stopped. The footsteps seemed to weaken and soon she heard the door close.

She couldn't move, and was unable to open her right eye or move as pain shot up in her side. Soon, she began to cry as humiliation washed over her.

"Kelly, don't you think this would look great in our apartment?"

Kelly's head turned to Shay as she showed him a furniture brochure while they sat in the common room. He raised an eyebrow as he looked at the bright red cupboard. "Not a chance."

Shay huffed. "Oh come on, it would look great by the TV!"

Tuuuum, Tuuuum

Everybody's heads snapped up and paid attention.

Ambulance 61, assault. Apartment 310, building 54, Jefferson Road.

The color drained from Kelly's face in a matter of seconds.

"That's Erin's place."

*hides from thrown objects* Thoughts?