Chapter Text
Emily sits back in her chair, mind already going through ideas and theories as Hotch wraps up the debrief on the latest case. This one was in DC, so they didn’t need to worry about flights, they were headed out as soon as they grabbed their stuff. She gathers the files in front of her as everyone stood, preparing to grab their bags and head out to the cars, but something outside of the conference room window stops her in her tracks.
“Hey,” She says as she moves towards the window. The others follow her gaze as a woman they don’t recognize walks into the bullpen. It’s not someone she knows, or at least not somebody she remembers, but her face is oddly familiar. “Who is that?”
JJ, Reid, and Garcia join her by the window, all sharing similar looks of confusion but after only one glance Morgan is already headed to the door, cursing under his breath. Despite Hotch’s insistence that they had a case and needed to focus, they all stand there watching as Morgan storms down the stairs heading straight for the visitor.
When he gets closer it suddenly clicks for Emily, why the woman looks so familiar. She looks just like Morgan. Not an exact copy of his face, her features softer, her eyes more striking, and her hair falling in tight curls around her shoulders, but the similarity is there nonetheless.
She thought she had met all of his family already. When Morgan had been arrested she had been in his house, but still, she never knew he had a third, younger sister. There were no stories of her, no photos, nothing. But she’s here now, and based on the way Morgan is reacting to her, it doesn’t take a profiler to figure out who she is to him.
She feels bad watching the two interact, the way Morgan grabs her arm and drags her into his office, the irritation clear in his movements. But this is the BAU. Nobody has secrets here. Though, based on the reaction of everyone in the conference room, this seemed to be Morgan’s biggest one.
- - - - - -
“What the hell (y/n),” Derek says as he drags you into his office. His grip is tight, but not painful. He’s not angry, not really, not that anybody outside of you would know that. You’ve been in this situation a few times with him before. “What are you doing here?”
“Oh my gosh, my baby sister,” you say dramatically as you pull your arm out of his grip. “I haven’t seen you since Christmas. How are you? How’s school? How’s mom? Oh, it’s all great? That’s amazing!”
Derek wasn’t amused, he never was one to appreciate your sarcasm. He shoots you a look as he crosses his arms over his chest.
“I don’t have time for your games right now, (y/n). Why aren’t you at school?”
“I can’t just come for a visit?” you ask with a nonchalant shrug, as you lean back on his desk. You move to pick up a file you find there but he quickly snatches it out of your hands moving to tuck it away on the bookshelf.
“Not unannounced,” Derek says, his jaw clenched. “And definitely not in the middle of the semester. What’s really going on?”
“There’s just…a lot happening and I needed a break.” You hesitated for a moment, not long, only a half second really but Derek caught it. He always knows when you're hiding something. “When I told Mom she said I could come spend a few days with you. I assumed she talked to you about it.”
“No,” he says with a shake of his head, his face softening for a moment. “No, she didn’t talk to me. But what about your work? Your classes?”
“It’s only a few days,” you try to reassure him “I have time off from work and I can do my classes online.”
Derek runs a hand over his face, his irritation growing as you say all of this like it’s nothing.
“Look,” he says with a soft huff. “You can’t just show up here and expect me to be able to let you stay. We are about to leave for a case right now.”
“Give me your house key,” you say holding out your hand. “I can go ahead and head over and just be there when you get back.”
“Not a chance,” he scoffs. He grabs your arm again and pulls you over to the couch in the corner of his office. “The case isn’t far so it shouldn’t take long. Stay here. I’m serious (Y/N). Stay in my office, don’t touch anything, don’t look at anything, don’t go anywhere. Got it?”
“Yes, sir,” you say as you plop down on the couch. He shoots you another glance as if not entirely convinced that you’ll listen.
“We’ll figure this all out later.” With that he leaves, muttering under his breath in the way he does when he’s frustrated.
You can’t help the soft smile that grows on your face as you look around his office. You stand up moving around the small space, taking note of the few pictures and decorations he has. Derek’s pretty boring but, you can’t lie it’s nice to be here. Nice to see the space he calls a second home, especially since you don’t get to see him that often.
Staying put doesn’t last long, there are only so many things you can observe, so many apps you can scroll through. Besides there’s no way he actually expected you to stay put. He knows you too well.
You peek through the glass window on the door, making sure you don't see him around before you turn the handle and slip out. You’re hit instantly with the buzzing of the bullpen, so many agents talking and moving around the space that you’re pretty certain you can get around unnoticed for at least a little while.
You keep walking down the hallway not finding anything of any interest. Just blank walls and locked doors. That is until you see…glitter? You make your way through the open door and are hit with an explosion of pink, glitter, toys, and lights. You see underneath everything there are several computer monitors on the desk and walls. and it doesn’t take long for you to realize whose office you’re in. You let out a soft laugh as you move over, picking up and observing one of the trinkets on the desk.
“Well, well, well. What do we have here?” you hear a voice say from the doorway. You spin quickly before putting the trinket back where you found it and giving her an innocent smile.
“Oh. My. God!” She suddenly says as she moves over to you. “You’re Morgan’s super secret baby sister, aren’t you?!”
“How did you…”
“Oh, you'll learn very quickly that any and everything that there is to know, I know it,” She says before pulling you into a hug. “Besides, hello!?! Who else could you be with that perfect bone structure?”
“I’m almost certain that you already know me because come on, if Morgan has talked about anybody on this team it’s me,” she continues. “But just in case I’m Penelope or Garcia, I answer to both. And you’ve already found my lair.” She gestures to the room around you and you nod, taking another look around at everything with a smile. You can already tell why Derek likes her so much.
“What’s going on in here?” Another voice says from the door. It’s another blonde woman, slim, stylish, and curious. Must be JJ.
“Jayge,” Garcia says confirming your suspicions as she walks over throwing her arm around the other blonde. “Meet (y/n), the BAU’s best kept secret. Also known as, Morgan's little sister.”
You give her a small wave as her eyebrows raise in interest.
“Ok, I need to know everything.”
It turns out, not staying put was a good choice. Hanging with JJ and Garcia is much more entertaining than scrolling on your phone in Derek’s office. Garcia insists on taking you on a tour, pointing out everything like an overly excited museum guide, her arm linked with yours.
“This is the magical coffee machine that fuels our genius,” Garcia says as she gestures dramatically.
“And our dread,” JJ chimes in as she follows closely behind you. “It’s literally always broken.”
“And over here,” Garcia says pulling you further into the bullpen. “Is the controlled chaos that is the workspace of our beloved profilers. Affectionately known as the bullpen.”
“This is yours?” you ask turning to JJ as you see a simply decorated desk with just a few personal pictures.
“How’d you guess?” she says with a light laugh as she picks up the framed photo of her and her family. “This is my husband Will and our son Henry. Has Morgan ever told you about any of us?”
“A little here or there, but not really.”
“Oh well, my love, it’s time for you to get an up close and personal introduction to everyone,” Garcia says moving to another desk. “This hot mess belongs to our resident genius.”
“Dr. Reid,” you chime in with a nod. “Yeah, Morgan calls him boy genius. Says he’s not much older than me but has like a trillion degrees.”
“Mhm,” Garcia says before pulling you to another desk. “And this desk belongs to…”
“Me,” another voice says. You look towards the voice to find a tall, dark-haired, strikingly gorgeous woman. Her lips are turned up into a smirk as she studies you with her eyes. “I’m Emily,” she says as she reaches a hand out to you to shake.
“(Y/N),” you say back taking her hand in yours for a firm handshake. Your hand lingers in hers for a moment, as you meet her brown eyes.
“And who are you, (Y/N)?” Emily asks, your name rolling off her tongue smooth and thick like honey.
“Morgan’s super secret little sister,” Garcia says, and Emily’s smirk turns into a wide smile.
“The hell is going on here?” Derek says as he walks up behind Emily and you have to hold back an eye roll as you drop Emily’s hand.
“I was taking a tour,” you say.
“A tour?” Derek asks, looking over to Garcia and JJ, but the two of them turn around looking around pretending to be in another conversation. Derek huffs and turns back to you. “I told you to stay put.”
“And I got bored,” you say with a shrug, and Emily lets out a small laugh, earning her a glare from Derek.
“Not helping,” he says.
“Can I just say," Emily chimes in. "This is quite the surprise."
“Good surprise or a bad surprise?” you ask, your attention fully turning to her, ignoring your brother standing in front of you. You see a spark of amusement in Emily’s eyes.
“Definitely a good surprise,” she says.
“You, knock it off,” Derek says pointing a finger at Emily before turning back to you. “And you, back to my office. Now.”
“Oh come on,” Garcia says rejoining the conversation. “She’s in good hands. You can’t expect her to stay in your office all day. She can at least chill with me and JJ while you guys work on the case.”
It takes him a moment, looking around at the women around him clearly seeing that he is outnumbered. Even if he wasn’t there’s no way he believes you’re actually going to listen to him this time. Eventually, he gives up.
“Fine, but don’t leave Garcia’s sight.” You hold your hand to your forehead in a salute.
“Got it, captain.” He just rolls his eyes before grabbing his bag and heading towards the elevators. Emily follows behind him but not before shooting another look towards you.
“See you later, (y/n),” she says as she slips past you, her voice low.
“Looking forward to it,” you shoot back, your eyes following her as she walks away.
“Ok, we are definitely discussing that,” Garcia says, excitement in her eyes as she loops her arm through yours again pulling you back to her office.
- - - - - -
“So,” Emily says to Morgan as the two of them step into the elevator heading down to the SUVs. “How old is your sister?”
“She’s off-limits, Prentiss,” Morgan says simply, closing his eyes and leaning his head back against the elevator walls. Emily smirks.
“Yeah, but that didn’t answer my question though.” The elevator dings and Morgan walks out, the moment the doors open.
“Off limits,” he repeats as he walks away. Emily just laughs as she follows behind him