Lindsay and Ruzek were on patrol, working overtime as uniform officers as security at a concert. They were messing around with each other, talking about relationships and money, when the concert let out and people began to flood out. She was pretty good at scanning the crowd, but she knew she got lucky when she saw Hailey with some friends headed their way.

"Hey, Hailey," Lindsay frowned as she grabbed onto her arm, stopping her from going passed them. "I didn't know you were here, Jay never said anything."

"Oh, yeah, it was a last minute thing," Hailey said, trying to brush her off.

Lindsay glanced at the people she was with a got a bad feeling. "So, Jay doesn't know you're here?"

"No, he doesn't, somehow I slipped his custody" she said as she glanced back at her friends. "I was studying with some people and like I said, it was last minute. Look, don't tell him, okay? He worries."

"I know he does," she said. "But, now I'm a little worried too."

"Let us drive you home," Ruzek said with a concerned frown. "After we're done here, it will only be ten minutes or so."

"Yeah, fine," Hailey shrugged. "They're headed to a party anyway, it's not really my scene anymore."

Lindsay was about to say something when shots rang out and everyone began to yell, run and panic. Hailey instinctively ducked, like most people around them, and she felt Ruzek grab her and cover her as he and Lindsay looked around.

"Stay here," Ruzek pointed at her as he ran down the stairs toward the commotion.

"I'll come back and get you," Lindsay told her as she disappeared down the stairs with Ruzek.

Once the shots had stopped and they had called for backup, Lindsay came back for Hailey. Some of her friends also stayed around but they left after Lindsay told them the scene was under control with back up there. When they headed outside, things still looked quiet chaotic to Hailey, and Voight immediately put her into his SUV.

"Jay is on his way," he said. "He was called in, but he knows you're here."

Hailey nodded and Voight paused with his hand on the door. "He told me not to come here when I brought it up last week," she said. "I told him I was studying with friends. He's going to be mad."

"Maybe," Voight said. "But, you're safe and unharmed and he will be relieved for that."

"I hope so," she said softly.

"Trust me, it's all the matters in the end," he said. "Look, we need someone in Intelligence to answer the phone, take messages, make calls, that kind of thing. I think it would be good for you, jobs yours if you want it."

Hailey smiled slightly. "Thank you," she said.

He nodded and closed the door gently. She sat alone in the SUV, waiting for Jay, she felt better but she was still nervous for Jay's reaction, and she was scared about what happened in there. Her anxiety was increasing by the second, and when Jay finally arrived and she saw him walking onto the scene, she jumped out of the SUV and ran into his arms immediately.

"I'm sorry, I'm sorry," she mumbled as he caught her and held her tightly. "It was just a concert, I wasn't going to the after party, you can even ask Erin. I'm sorry I didn't tell you about this, but don't be mad."

"I'm not mad, Hails, I'm worried." Jay said as he pulled her back to look her over. "Are you okay? The truth, Hailey."

"I'm scared, Jay." She said as she shook her head, tears falling. "I'm really scared. If Erin hadn't stopped me, I would have probably been outside when the shooting started. I know you have to work, but Will is working too, and I don't want to go home alone."

"Hey, hey," Jay pulled her back into his embrace. "It's okay, you can stay at the station while I'm working, you'll be safe there."

"I want to stay with you," she mumbled as he tightened his hold on her. She could get pretty clingy when she was scared, this situation scared him too, but he knew she couldn't stay with him at the scene.

"Hailey, listen," he said as he put his hands on her shoulders and leaned down slightly. "I can't do my job if I'm worried about you. I need you back at the station, or with Will."

"I won't get in the way or anything," she said.

"I know you won't, baby, but it's still not safe," he said softly. "Wait for me in the car, let me do my job, and then we will go to the station."

Hailey nodded and headed to his car to sit alone until he was done at the scene. She turned the car on so she could listen to music and answered a few text messages from her friends. When Jay was finished they headed to the station and he called Will on the way to pick Hailey up after his shift ended.

The team went to work back at the station to piece together what was going on. Hailey stayed out of the way until things calmed down before she left the break room to find Jay. He was sitting at his desk and he reached out for her as she walked by, letting her sit on his knee as he continued his conversation on the phone.

"I've still got a lot of work to do," he said after he hung up. "Will is on his way, you'll be okay with him, right?"

"Yeah," she said as she glanced at him. "Can I ask you something?"

"Of course," he frowned slightly. "What's wrong?"

"Mouse is thinking about going back in," she said. "Would you ever do that?"

"No, I'm never going back," he said as he adjusted her to catch her eye. "I promise, Hails, you don't have to worry about that."

"Good," she said as she looked at him with a shrug. "I just got you back."

OOOOO

Hailey came home after her class to an empty house the next day. They had moved not too long ago into a really nice townhouse that she wondered how they afforded. But, she knew that Jay and Erin made pretty good money so she assumed they would get approved for a decent size mortgage. Will moved in to keep them all together, but Hailey knew it was also because he was having some financial trouble with his medical school loans.

The house was in a good neighbourhood so it made Hailey feel safer and it was a two-storey, so there was plenty of room for all of them. The front door opened to the living room, with the staircase on the far right and the kitchen and dining room beyond the living room wall. The floor plan of the house kind of reminded Hailey of the Huxtable house in The Cosby Show. Upstairs, there were two bathroom and four bedrooms.

She dropped her bag on the couch and sat down, pulling out her laptop to work on a paper as she flipped on the TV for some background noise. She worked until Will came home from work with Nina joining him. Hailey had only met her once, she seemed nice and he was happy, but she wasn't really close with either of her brother's girlfriends.

"Hey, Hails," he said. "What are you doing?"

"This paper for a class," she mumbled. "Can you read it when I'm done?"

"Yes, I can do that," he said as he leaned down to kiss her head. "You remember Nina, right?"

"Yeah, hi," Hailey said with a smile before turning back to Will. "I need help with another class too, I didn't do well on two tests and the midterm is soon and I'm freaking out."

"Okay," he nodded and sat beside her. "Let me see the tests, so I can see where you're having trouble."

"I'm going to get started on dinner," Nina said and disappeared into the kitchen with a bag of food.

"It's not that bad, but I want an A, and it doesn't look like I'll get it," she said as she pulled the two tests from her bag and handed them to him. "I feel like the questions try to trick us and I don't like that."

Will grinned as he looked over the tests. "That usually happens with multiple choice exams," he said. "So, what you need to do is read the question completely and pick the best answer, there could be more than one right answer, and that is probably where you are getting stuck. You are reading too fast and not thinking all the answers through in terms of the best choice."

"But, that doesn't make sense," she said. "How can they put more than one right answer on the test? I hate psychology."

Will grinned again, he knew his sister was a perfectionist and she didn't like to be wrong. "Hails, it's okay," he said. "A lot of people struggle in college, especially with multiple choice exams."

"I can't struggle, I'll lose my scholarship, I'm already on," she stopped suddenly.

He raised his eyebrows at her. "Already on what?" he said. "Academic probation?"

"Maybe," she said slowly. "I had a bad last semester, with everything going on with my issues and the thing with Dad, I missed some classes and then didn't do well on the exams."

"Hailey, why didn't you tell me?" he asked. "I could have helped you."

"I don't like asking for help, I hate feeling stupid," she said. "And, I've only had myself to rely on for the last few years."

"It doesn't make you stupid to ask for help when you need it, sweetheart," he explained. "Are you doing better this semester?"

"For the most part," she said. "I'm doing well in my major, I was a little behind because of last semester but I caught up in all my neuroscience classes, it's the psychology minor that is screwing with my GPA."

"Look, first year is a big adjustment, but second year the material gets harder," he said. "You will get through it, you are more than smart enough, and I will help you, but you have to ask."

"Well, I'm asking now," she mumbled as she rubbed her head. "I have a headache."

Will frowned slightly. "Are you not feeling better yet?" He said. "You're almost done the antibiotic cycle."

"It's not that, my throat feels fine and the pressure is gone," she shook her head. "I just have a headache, probably from staring at the computer screen all day. It's been bothering my eyes."

Will smirked. "Well, let's take a break from the computer, go over these tests and then go eat some dinner."

"Dinner that your girlfriend is cooking," Hailey grinned at him.

"Do you like her?" He asked.

Hailey shrugged. "She seems nice enough," she said. "I like her, and I like Erin too."

"Well, your brothers have good taste in women." He said.

"Or, you both just got really lucky." She teased.

OOOOO

Hailey woke up during the night suddenly feeling sick and tried to rush to the bathroom. She was dizzy, dizzier than she expected and she had some trouble. Scott was right behind her, having woken up from her movements and he reached out to help steady her. Hailey had asked him to stay over because Jay was working late again and Will had gotten called in for a few hours. She knew he would probably be home by now, but she didn't expect Scott to leave, nor did she want him too.

"What?" he said. "What's wrong?"

"I'm going to be sick," she said hastily. "Bathroom, now."

Scott helped her get to the bathroom, thankful it was right across the hall but the minute he set her down she was throwing up. He flipped on the bathroom light, much to her dismay and it only seemed to make things worse.

"Are you okay?" Scott asked as he reached out to steady her, seeing her swaying motions.

"Oh my God," she mumbled, sitting in front of the toilet. "You can't see me like this, get Will."

"I've seen you worse," he said as he held her hair. "You've seen me worse too."

"Yeah, but this is gross," she said. "Ugh, please just get Will, I think something is wrong."

Scott left her and headed down the hall to Will's room. Normally he would hesitate and this would be really awkward for him, but he knew Hailey needed help, so he knocked and then he waited. He heard movement behind the door before it opened to a confused looking Will staring down at him.

"It's Hailey," he said. "She's throwing up, something is wrong."

Will was immediately alert and headed down the hall with Nina and Scott close behind him. They waited in the hallway as Will tended to his sister. "Hails," he said as he felt her forehead and held her as she continued to get sick. He was trying to figure out what was going on with his sister, she seemed fine a few hours ago, but now she was completely different.

"What happened?" Will looked at Scott as he ran a face cloth under the cold water and put it on the back of her neck.

"I don't know," he said. "She woke up and said she felt sick and dizzy."

"Nothing happened?" Will questioned further. "She didn't fall, or slip, or hit her head?"

"No, no, nothing while she was with me," Scott said as he racked his brain. "Oh wait, she hit her head yesterday at the concert. During the shooting, it was an accident when everyone was panicking, but she said she hit her head."

"She had a headache at dinner," Nina reminded him. "And, the computer was bothering her eyes."

"It's the lights," Will said as he looked at her. "And, she's dizzy."

Nina nodded. "Let's take her in," she said.

"Take her where, the hospital?" Scott said. "What's wrong with her?"

"Post-concussion symptoms," Will said. "Hails, I'm going to move you, alright?"

"No, Will, please don't pick me up, I don't feel well," she whined.

"Sweetheart, I have to," he said. "We need to go to the hospital."

"I'll drive," Nina said. "Scott, run downstairs and grab some plastic bags from under the kitchen sink in case she gets sick in the car."

Will picked Hailey up with ease and carefully headed down the stairs and out to the car. He sat with her in the back seat, holding a bag and the cold cloth against her forehead as she closed her eyes and breathed slowly. Scott was in the front and Nina was driving, he stayed turned around watching her and Nina kept glancing in the mirror.

When they got to the hospital Nina ran ahead inside to tell the emergency staff what was going on. Will carried Hailey through the doors and put her down on a waiting stretcher and went with it, he knew they were going to try and keep him out, but he wasn't going to let them even try. He was a doctor, this was where he worked, and it was his sister, no one was going to keep him out.

"Will," Natalie said gently. "I got it, I promise."

"I'm not leaving her." He said firmly.

"Okay," she said as she checked her vitals and slipped an oxygen mask on Hailey. "Then, tell me what happened."

"She hit her head yesterday, I didn't know about it," he said. "She was fine, she had a headache earlier today, and then she woke up vomiting with dizziness and sensitivity to light."

"Let's get a head CT," Natalie said as she did a quick neuro exam. "Get an IV in to keep her hydrated."

"Natalie," Will said as he watched everyone start moving.

"Will," Hailey said, reaching out for him. "Don't leave me."

"I'm not, sweetheart, I'm right here," he said as he grabbed her hand. "Nat, talk to me."

"I just want to make sure she's fine," she explained. "I don't see anything other than concussion symptoms, but I want to be thorough."

He nodded and went with them up to the CT scan. It was hard for him to see his sister like this, but he couldn't stay in the room while she was getting the CT. She didn't like that, and it made it harder for him, but he talked to her through the intercom to keep her calm as the images came up.

"It's good," Natalie said. "No signs of a bleed, I want to keep her overnight for observation."

Will nodded. "Thanks, Nat."

Hailey had fallen asleep with the medication to help her rest and ease her dizziness and nausea. When she woke up the next morning she was in a hospital room with Will asleep in the chair beside her. She tried to sit up, but her head still hurt a bit and she noticed she had oxygen on and an IV in. She frowned as she laid back down and turned to her brother.

"Will," she called out before clearing her throat. "Will?"

He stirred, frowning as he woke up and leaned forward in the chair toward her. "Hey," he said softly. "How are you feeling?"

"Better," she said. "Where's Scott?"

"Nina took him home a few hours ago," he said. "Only immediate family is allowed to stay."

"Where's Jay?" She said.

"He's here," he nodded. "He probably just went to get some coffee, he'll be back."

"Oh," she mumbled. "What happened last night?"

"Still a little foggy?" He asked.

"I never took anything," she said, afraid he'd think she slipped up again.

"Hailey, I know that, sweetheart," he said with a frown, shaking his head. "You never told me you hit your head at the concert, that's what happened."

"I didn't think it was anything," she said. "It happened fast, everyone was shoving and trying to get cover or run."

"You had a concussion, Hails," he said. "That's why it's important you don't ignore things, especially head trauma. You're lucky you are okay."

"I'm lucky I have you," she said.

"You scared the hell out of me," Jay said as he walked back into the room and sat down on the bed. "Are you feeling better?"

She nodded. "Sorry," she mumbled. "I really shouldn't have gone to that concert."

"The lying to us part is on you, and I don't like it, so don't do it again," Jay said. "But, this part, the shooting and you getting hurt, it's not your fault. Not even a little, we're just glad you're okay. We love you, baby."

"I know, I love you guys too," she nodded. "When can I go home?"

"Hopefully later this afternoon," Will said. "Why don't you try to get some more rest until then?"

"Are you staying?" She asked as she glanced between her brothers.

"I have to get to work, something jumped off," Jay said as he kissed her head. "I will see you at home later, call me if anything changes."

Will nodded and Hailey watched Jay leave before turning to Will. "Can you rest with me?"

He smiled. "Yeah, I can do that," he said as he got into the bed beside her, carefully putting his arm around her and dropping a kiss to her head.