This idea has been kicking around for a while and bugging me... I do not own Chicago PD or it's characters...

A note and a number scrawled on the back of a card. Evelyn Martinez had written it quickly and stuck it in Jay Halstead's backpack before they hugged and went their separate ways. 'If you ever need anything… Call me. Ev.' She wondered if he would ever find it.

Sure she had saved him after the IED exploded near their camp. She would have done it for anyone. In fact she did. She saved another guy that everyone called 'Mouse'. She didn't know at the time it was Jay's best friend. The three became close. But it was never more than friendship. She had Brandon waiting for her when she got home.

Jay Halstead opened his wallet and grabbed a twenty to pay for his lunch. He didn't notice the frayed card that fell out. Erin Lindsey saw it and reached down to pick it up. She read the note to herself and handed him the card. "You dropped this."

"Oh wow. Thanks." He tucked the card in his wallet. He had forgotten about it.

"Who is Ev?" She asked.

"Army medic. Saved my ass on more than one occasion." He didn't elaborate.

"Well if it isn't two of Chicago's very finest." Sergeant Trudy Platt said sarcastically when Sean Roman and Kim Burgess walked by the desk.

"Good morning Sarge." Roman said.

"Yeah, yeah. I need you two geniuses to escort Miss whatever her name is now upstairs." She gestured to the blonde woman standing at the end of the desk with a box of medical supplies.

"Who is it?" Burgess asked.

"I just told you. She's here for mandatory inoculations. Commander's orders. No more questions." She rolled her eyes.

"The voluntary flu shots we signed up for?" Burgess asked.

Platt just stared at her.

"Let's just go." Roman said.

They walked over to the woman who was waiting for them.

"Hi. I'm Kim Burgess." She held out her hand.

"Evelyn Martinez. Nice to meet you." She smiled and shook Kim's hand.

"Sean Roman." He shook her hand. "Are you a nurse?"

"Army medic." She answered. "And yes, flu shots." She smiled at Burgess.

Alvin Olinsky walked in and saw them talking. "Flu shots?" He asked.

"Yes."

"Follow me." He put in his code and let them up. "You two her escorts?"

"That's us." Burgess said. "Why should she be the escort when we can?" She meant Platt.

"Some things never change." Evelyn said.

They looked at her.

"You know Platt?" Burgess asked.

"Trudy and I go way back. She would never say it, but she called in a personal favor."

"I didn't get your name. Alvin Olinsky." He held out his hand.

"Evelyn Martinez." She shook his hand.

"Nice to meet you." Her name didn't ring a bell, but she looked vaguely familiar. And she knew Platt. Not too many people admitted that. "You can set up wherever."

"Hey Al." Adam Ruzek walked in with a stack of papers not noticing anyone else.

"Hey Burgess, Roman." Kevin Atwater looked up from his desk.

Antonio Dawson and Hank Voight were talking in Voight's office.

"Uh, you guys need help?" Ruzek asked.

"No. We're just gonna stand here." Olinsky took the box from Evelyn and set it on his desk. "This is Ms. Martinez. She is here to give us all our flu shots."

"Did I sign up for that?" Ruzek asked.

"Yes, you did Adam." Burgess answered.

"Adam Ruzek and Kevin Atwater." Olinsky pointed to both of them.

"Nice to meet you." Evelyn said.

"I hate needles." Ruzek grimaced while he got his shot.

"You will live." Evelyn's snarky personality was surfacing.

Burgess chuckled. "She's right."

"You two an item?" Evelyn asked.

"Uh, yeah. That obvious?" Burgess asked.

"Yeah." She smirked and dropped the needle in the sharps container.

"I guess I'm next." Atwater handed her his paperwork.

Antonio Dawson walked out of Voight's office.

"Hey Antonio, you're next." Atwater said.

"Next for what Kev?" He asked.

"Flu shot."

"Here is your paperwork." Evelyn handed it to him.

"Ah. Thanks. Antonio Dawson." He smiled at her and held out his hand.

"Evelyn Martinez." She shook his hand. "Nice to meet you."

"Likewise." He smiled. Her blonde hair and light skin tone didn't match her last name.

"I don't remember signing up for this." Mouse walked in with his paperwork. Ruzek had given him a copy.

Evelyn heard the voice and wondered if it was her friend. "All done." She told Antonio.

"Thank you. Mouse. You're up." Antonio looked at him.

"Great." He groaned.

Evelyn turned around. "Hey Mouse." She smiled when she saw him.

"Ev!? Oh my gosh!" He threw his arms around her and hugged her. "It's good to see you."

"You too." She hugged him.

"I did not know you were in Chicago."

"Yeah. Didn't plan on it, but here I am." She shrugged.

"You two know each other?" Olinsky asked.

"Yeah. We were on the same tour in Afghanistan." She said.

"I heard you had another tour." Mouse said.

"Yeah. I was home for a month and got called back. Extenuating circumstances is what they called it."

"Damn." He shook his head. "That sucks."

"Yeah it did. Either I didn't know how bad it was the first time around or the second time was just that much worse." She drew up the vaccine. "You ready for this? I'll make it quick." She knew his aversion to needles. Constant needle sticks, blood draws, and IVs could do it to anyone.

"Yeah. Make it quick." He sat down and pushed up his sleeve. He could feel himself getting dizzy.

"Hey." She snapped her fingers at him. "Right here. Look at me."

He looked at her.

"How long have you been working here?" She asked.

"A couple months."

"Yeah? You like it?" She waited for him to answer before she stuck his arm.

"Yeah. It's been good. It's a good fit for me." He almost didn't feel the stick. Almost.

"Good. Well, you look better than the last time I saw you." She dropped the needle in the sharps container.

"Thanks. I don't remember much about that."

"That's a good thing." The accident was bad. She hoped he never remembered it.

"Paperwork." Olinsky handed the pages to Jay and Erin after they walked up the stairs. "For flu shots." He wondered if Evelyn knew Jay also.

Mouse saw Jay. "Hey Jay. Look who it is." He pointed at Evelyn.

"Oh my gosh! Ev!" He dropped the papers and rushed to hug her. "I can't believe you're here. It's so great to see you."

She returned the hug and felt her eyes misting.

"I'm sorry. I didn't keep in touch." He kissed her temple and gave her another hug.

Erin didn't like what she saw. Sure Jay was her partner, and sure they had briefly been something more, and now they weren't. But that definitely didn't mean she wanted to see him in the arms of another woman.

"Erin. This is Ev. The army medic that saved my ass twice."

"Three times." Evelyn and Mouse said at the same time.

"So maybe it was three times." He rolled his eyes. "This is my partner Erin Lindsay."

"Nice to meet you." Erin forced a smile.

"You too." Evelyn could feel the tension.

"So how long have you been in Chicago?" Jay asked Evelyn. They were sitting in the break room. She had finished everyone's shots except for Voight. He had been on the phone.

"Long enough to remember my way around."

"There it is. Evelyn Martinez. Master of being vague." He rolled his eyes.

She groaned. "Two months."

"Where have you been since I saw you last?"

"Home for a month. Another tour. And a lot of places after that. Vancouver for six or seven months. I needed to clear my head."

"Well you look good." He said.

"The physical scars heal faster. I came home broken." She admitted.

"Maybe I should have left you my number." He squeezed her hands. He knew the struggle.

"Maybe." She nodded.

"How is Brandon?" He changed to a subject she would be more willing to talk about.

"I wouldn't know." She held up her left hand. No ring.

"Oh. Sorry. What happened?"

"Being deployed twice, almost back to back, in three years can take its toll. I guess I didn't know him as well as I thought I did."

"What does that mean?" He asked.

"He has a daughter. And a kid isn't a deal breaker. It's just that she was born during my first deployment."

"Oh."

"Yeah. And we were engaged when I was deployed."

"Wow. What a jerk."

"It gets better." She rolled her eyes. "You know how I told you he worked for a pharmaceutical company?"

"Yeah. He didn't?"

"Technically yes. He was in pharmaceutical sales, but also acquisition and distribution."

Halstead started laughing. "You're telling me that your fiancé was a drug dealer."

"Yep. I picked a keeper."

"Where is he now? Still in D.C.?" He wanted to call the police there and have the jerk arrested.

"No. He told me all of that and then flew to Mexico City. I doubt he's still there. My brother drove him the airport. And then he flew back to Chicago."

"I forget you have a brother. Is he behaving himself these days? And did he forget that the terms of his parole kept him inside the city limits of Chicago?"

"Oh I don't know about that."

"I bet you don't." He teased.

"No I don't know." She preferred to remain in the dark when it came to her brother's extracurricular activities.

"Hey Al. I have a question." Ruzek spoke in a low voice.

Olinsky looked up at him.

"Is it just me or does something seem off about her? She definitely doesn't look like a Martinez."

Evelyn and Halstead were walking out of the break room. She heard her last name and looked at Ruzek and Olinsky. "Whatever you are wondering you can ask me."

Ruzek felt embarrassed. "Uh. It's just that you don't look like a Martinez."

Antonio rolled his eyes. He couldn't believe Ruzek actually said that.

"What the hell Adam?" Halstead glared at him. "What's a Martinez supposed to look like? You don't look like a Ruzek." He didn't know what a Ruzek looked like. It just sounded like the right insult.

"Actually he does look like a Ruzek." Evelyn smirked. She knew his father.

"What's going on out here?" Voight emerged from his office. He looked at Evelyn. She looked familiar. Trudy had said someone would be giving flu shots.

"Evelyn Martinez. Or that's my name now." She glanced at Ruzek. "You might remember me as a terrified fourteen year old girl named Evie Podolski. Who happened to witness her uncle do something stupid." It was a text book case of being in the wrong place at the wrong time. She was riding her bike home from school. She saw her uncle in the park standing over a dead body and picking up shell casings. Hank Voight happened to pull up at the exact same time. "You saved my life." She whispered.

Voight nodded. "I remember you. I always wondered what happened to you after you left Chicago."

"I grew up outside of D.C. with a family that Trudy knew. After college I joined the army. After a training accident I had to settle for being a medic. Two tours in Afghanistan."

"Good for you." He smiled.

"Thank you."

"You know your uncle is still alive?"

She nodded. "I needed to return to Chicago. There's been so much I've missed from my family… It's why I kept Martinez and didn't switch back."

"I understand. You need anything from me, you call me."

"I will. Thank you Hank."

"That's where I know you from. I remember you now." Olinsky put the pieces together. Her phone started buzzing. Halstead glanced at it. "It's your brother. Want to talk to him?"

"Which one?" She asked.

"Nicholas?"

She rolled her eyes and nodded. Jay tossed the phone to her and she answered. "Hello?"

"Hey are you busy?" He asked.

"I'm working what's up?"

"I smashed my finger and I need you to tell me if I need to go to a doctor."

"How did it happen?"

"What does that matter?"

"Trust me. It matters." She rolled her eyes.

"I was working and I smashed my hand, but one finger in particular hurts."

"Just go to the doctor. You probably broke something. I'm not an expert."

"But you are cheaper than a doctor. Thank you!" He hung up.

She rolled her eyes and put her phone down.

"What was that about?" Halstead asked.

"I'm not sure. He was asking if he needed to go to the doctor." She knew he wasn't telling her the whole story.

"What's your other brother's name?" Halstead asked.

"Ricky. He stays out of trouble. Nicholas has worked hard to keep him out of trouble. He runs a café near the house. And before you ask it is totally legit. Nicholas has had his issues with the law, but he looks after Ricky and myself. Always has."

"Hopefully it will stay that way." Halstead said.

"There's no guarantee." She shook her head.

"I know. But here's to hoping."

"Yeah." She glanced at her phone. She had a text from Nicholas. He needed her to pick him up. "I've got to go."

"I'll walk you down." He picked up her box.

"Thanks. It was nice to meet all of you." She said.

"Is there someone we need to call if we have a reaction to the shot?" Ruzek asked.

"You should be fine, but you can call your doctor, or have Jay call me." She said over her shoulder.

"Antonio. You should totally fake a reaction so you can talk to her." Ruzek teased him.

"Man what's wrong with you today?" Antonio rolled his eyes, but had to admit it wasn't a bad idea.

"Bye Trudy." Evelyn said as she walked by the desk.

"Stay out of trouble. Good to see you." Platt said.

"You too." She smiled.

"We'll stay in touch. I'm sorry I didn't stay in touch with you. I should have." Jay felt bad.

"I could have found you and gotten in touch with you. I just didn't. I needed to clear my head." She shrugged. "I'm good now."

"Good. I'd better get back upstairs. I'll see you soon." He hugged her.

"See you soon." She smiled and walked outside. She came back to Chicago for a new start. She knew now that it was the start of something good.

I'm not sure where this story is going to go. I'm somewhat of a "LINSTEAD" fan myself so... Any thoughts, suggestions, reviews, etc. are welcome and much appreciated!