Keep On Marching On Chapter 1: Little Soldier, a Chicago PD + Chicago Med Crossover fanfic

*the first day*

'My name is Jay Halstead, I am a former Sergeant with the Army Rangers, I am a Detective with the Chicago Police Department Intelligence Unit, badge number 51163. I have an older brother Will Halstead, my best friend is Mouse. My unit will find me.'

Jay found himself repeating those few sentences over and over in his head, a tactic learnt from the rangers training, give yourself a few facts to focus on, to take you to that safe space in your mind, where they can't reach you and they will never be able to fully break you. He had been travelling for a few hours now, he thinks, knowing he was out of Chicago but no clue where they were headed. He was so pumped full of whatever drug they gave him that he could feel himself start to slip again.

~ about a hour later~

Jay woke up slowly with a stinging pain in his neck and discovered his arms tied above his head when he tried to rub the grit out of his eyes. 'What the hell' he thought, tried pulling at his bindings and realised that he was well and truly stuck. Following the chain with his eyes across the ceiling he noticed it linked to a contraption made to tighten or loosen the chain, 'ah so they want me on my feet easily? Great, I know what this means' his thoughts continued.

At this he took in the rest of his surroundings: no window 'there goes the ability to tell the time', one single black metal door 'probably in a basement, harder to escape', and a chair with a metal tray next to it with what looks like a sheet covering it 'probably mystery mans favourite instruments of torture' his detective brain added unhelpfully. When finishing his once over of the room did he finally realise how quiet it was, and it was that moment when he held his breath, waiting for the other shoe to drop. What was going on? What happened, who are these people and why do they want him?

Loud footsteps cut through his spiralling and not wanting to seem bothered he pulled himself up and stood to let his hands drop, hearing the door open he let his mask of neutral wash over his face and asked in a bored tone "what do you want?".

"It would be best if you quickly learnt not to address me that way" the mystery man spoke with an authoritative voice. He made his way closer to Jay, seeing that he was standing and kicked him in the back of the knees so that he was back to kneeling in front of the man, Jay tried hard not to let make a sound but a grunt slipped through. Looking up Jay realised that he didn't have a clue who this man was or why he was taken, he tried to find links to any current or past cases but nothing came forward.

"Now little soldier don't look at me that way, I came with an offering"

Jay just looked on, raising a single brow in questioning.

"All you have to do is have a nice dinner with me upstairs, accept your new home, and it won't hurt. Just submit and there will be no more pain."

Jay didn't know what that meant and couldn't decide if he actually wanted to. He looked up, again with disinterest but the mystery man could see through that, could see the wall standing up strong in his captives eyes.

"Oh, I know all about your little trip to Afghanistan, about the dreams that keep you awake at night, the faces you can't get rid of no matter how much you try to drown yourself in a bottle."

Jay shifts at this.

"Who was your little friend again? The one with the animal for a name? What was it? Oh yes… Mouse, how is he dealing with the guilt?"

That was it, the straw that broke the camel's back, Jay stood and lunged as far as he was able at the man. He stopped just short of being within hitting distance thanks to the chains wrapping around his wrists, but wasn't far enough unfortunately. Mystery man threw out his arm and a sudden pain overwhelmed Jay's senses, his body tensed and he knew immediately that it was a taser. After a few hits Jay was still silent, just trying to catch his breath and was back on his knees.

"What did I say about manners? If that's how you act in a civil conversation then we are going to have to fix that, and you can't be going around fighting people in the middle of a conversation."

This confused Jay, fix it? Fix what? He still doesn't understand what is going on. While Jay is in his head, thinking things through, the mystery man goes to the wall and flicks the lever, lifting Jay so that he is up straight, hands above his head and his toes skimming the floor. That's when the blows start. Quick, heavy, sharp knuckles against skin. His chest, torso and head all receive the angry hits. He hangs there; arms supporting his full weight, trying to keep his head up and forward, facing the man, yet still he does not cry out, cannot show that bit of weakness. Noticing this, the mystery man hits him again with the taser, then again with his fists, then pulls a needle out of his pocket.

'Huh' Jay thought 'this is going to end well…' he starts to panic a bit, tries to pull away but the grip on his hair and the chains holding his wrists keeps him in place. Then the sting as the needle is pushed into his neck and the clear liquid is injected into him.

Feeling fuzzy, Jay tries to take calming breaths, steady his racing heart, tries to go back to his training. In, count to 4, out for 4.

"Come on Halstead. Pull it together, you've faced worse"

"Oh and what would that be? Summer '08? Or would it be the humvee?"

'Did he really say that out loud?'

"Oh little soldier, if only you understood what I knew. You're a fighter, I'll give you that, you haven't shown a sign that my drug is working. Maybe I just need to up the dosage? You know you're really going to enjoy it here, when you learn to behave. It'll be fun."

The man was circling him now, Jay didn't know where to look, too busy trying to fight whatever he was just dosed with, internally praying help would come soon, he didn't know what this man was trying to do to him and that, as much as he hates to admit it, scares him.

Another needle makes its way into his line of sight and too tired to fight, he shifts away, hoping for the best. 'Nope never mind' he thought helplessly as the needle plunged into his neck again. He gets another round of punches, a few to the head to knock him off kilter. He thinks he hears people screaming but doesn't think too much into it, too busy trying to focus on the man standing in front of him.

The mystery man makes his way over to the table and removes the cloth, places the two empty needles down and picks up a small blade, what looks to be a 5 inch blade and slowly walks over to Jay. He drags it up and down each one of his arms, putting just enough pressure to tingle but not break the skin, and finally rest at Jay's jaw line. Pausing to make sure Jay is still looking, the man cups his cheek with the free hand to which Jay snarls and tries to throw him off. The man glares and cuts just below his collarbone, deep enough to scar but not do any muscular damage. Still holding Jay's cheek, the man drew the blade back and made a matching cut on his lower torso, just above both of his hips.

"Look what you made me do. If you were good that wouldn't have happened."

Jay didn't understand, how could this man hurting him be his fault?

"I d-don't know wh-what you want f-from me."

"Oh Jay, my little soldier, I just want you to be happy, I don't want you to hurt, I want you to be good. Can you be good?"

At this he drops Jay's head and slaps him straight across the cheek he was so gently caressing.

"I asked you a question. Can you be good for me?"

Again Jay didn't understand so just nodded and finally dropped his head to the sound of screams filling his mind.

The man stepped back with a grin on his face, he could see his little ones lips mumbling through a phrase. 'Soon he will understand' he thought, 'soon there will only be me'.

And with that he stormed out the room making sure to slam the door on his way out, peaking back to see the flinch make its way over Jay's face, and smirked.

"This will be fun"