AN: Hi all, This is a story idea I've had in my head for a while. For timeline sake it is set in season 4 sometime after the Jimmy stuff but before Jay moves out.

"Three days off!" Jay and Erin said together in almost a sing song voice. They were drinking at Molly's with some of the team, it had been a long hard few weeks and they were celebrating the forced days off. It had come down from above that Hank needed to make his guys take some time off. Over the next few weeks everybody needed to take three days off in a row. Erin and Jay didn't mind too much, they were physically and mentally worn out, and craving some much needed time alone together.

"Our phones will be off, so don't try to call us," Erin said, her arm wrapped around Jay's back, "we'll see you all in four days."

"Have fun," Adam said, clinking his beer with Jay before gulping the rest of it down.

"Oh we will," Jay smiled, "we'll see all you in a few days."

He turned around with Erin still holding on to him and they walked out the bar and down the road. They were parked a little way from Molly's, one block down, two blocks over. They were in a good mood, more relaxed than they'd been in a long time. They didn't hear the footsteps come up behind them; they thought they were alone until they felt the impact of a Taser hit their backs and the jolt of electricity rip through their bodies. Together they fell to their knees, and then forward onto the pavement. Their eyes locked in on each other as two people dressed all in black with their faces covered came at them from behind, needles were inserted in their necks and something injected inside of them. Everything went black.

…

Jay was jolted awake by the impact of his body hitting cold hard dirt, he rolled several times before coming to a stop. He had no idea where he was or how he'd got there. His head felt full, he couldn't focus on anything, the last thing he remembered was leaving Molly's with Erin. Where was Erin? He reached around in his immediate area, she wasn't there.

"Erin!" He called out hoping by some crazy fluke she was there with him somewhere but all he heard was silence, and then the chirping of crickets. His mouth was dry, his lips were capped, he tried calling out again, "Erin!" but still no response. Where was he? What had happened to him? He pushed himself up on all fours, pain ripped through his body, he felt like he was going to blackout.

He tried to get his bearings, he was in the middle of nowhere, surrounded by trees and dirt, he couldn't see any lights not from buildings, not from cars. He looked down at his hands, they were covered in blood, his whole body was streaked with blood, he couldn't tell if it was all his, deep gashes covered his body, some were still bleeding, others had started to scab. His senses were telling him he was in trouble that something terrible had happened. He needed to get help, he tried to stand, but every tiny movement sent pain ripping through his body. Everything hurt, with effort he got to his feet, on his first step his left leg gave way, he fell to the ground. For a while he just stayed there, he couldn't think straight; he didn't know what he was supposed to do. He knew he needed to move but he didn't know which direction. He blacked out again, woke up to the sound of a car driving slowly nearby. Through the trees he saw the headlights, the car wasn't moving but the engine was still running. Instinct told him getting to that car was his only hope for survival.

Dragging his left leg behind him he began staggering through the trees. Bouncing from one tree to the next, he pulled himself forward, willed his body to stay up right, to keep moving, prayed the car would stay there. It took a long time for him to travel those one hundred yards, when he reached the car his hands slammed against the passenger door, he heard a young woman scream, and then a male voice but the words were muffled. He tried to hold on but he'd used the last of his energy getting to the car. He blacked out again and fell to the ground.

…

"Sir can you hear me?" someone asked him as they gripped down hard on his shoulders and squeezed into his collar bone. His eyes flew open, he pushed them away. He let out a groan and tried to sit up; the rapid movement made his head spin and turned his vision blurry.

"Sir, can you tell me your name?" the same voice asked.

"Jay," he said turning his head left to right, trying to work out where he was. He could see headlights to an ambulance but nothing else.

"Do you know what happened to you?" the voice asked.

"No," he said, still trying to comprehend what was going on, "where is Erin? Is she here?"

"No one else is here," the voice told him, "who's Erin?"

"My girlfriend," he said continuing to look around, "I need to find her."

He tried to stand but hands held him down, "You need to go to the hospital," a second voice said, "the police are combing the area, if your girlfriend is here they'll find her."

"I need to find her," he said again, and a surge of adrenalin rushed his body. He pushed aside the person holding him down, and then he was somehow on his feet, before he could workout which way to move he fainted again.

…

"Male approximately thirty years old. Found confused and disorientated in the south parklands, multiple lacerations, server deformity to the left leg, pulse 150, BP 100/60, temp 103."

Jay heard the man rattle off his condition, he knew he was strapped to a gurney, he knew he was at the hospital. His head was swimming, full of more information than he could process, but not the information he needed. "Erin!" He twisted his head from side to side, hoping beyond hope that she'd somehow turned up. That she was okay, at the hospital waiting for him. He couldn't see her though and no one seemed to hear him.

"We'll take it from here," he heard a woman say, "Dr Halstead."

Then his brother was leaning over him.

"Jay?" his brother said, a look of shock and surprise crossing his face.

"Will?" he let out a sigh of relief, grateful that a familiar face was looking after him. "Is Erin here?"

"No," Will told him, "hang on a moment." Will's attention turned from him to the group of medical people gathered around him, "lift on three. One, two, three."

He groaned in pain as the medics transferred him from one gurney to the next. Will began giving out instructions and someone grabbed his arm and tried to put a needle in it. Instinct made him pull his arm away.

"Jay we need to get a line in," Will said grabbing his hand, "stay still."

He stayed still long enough for the other doctor to put the line in, he watched them take vial after vial of blood and finally attach a bag of clear fluid. A flurry of activity was happening around him, he focused on his brother.

"Erin?" he asked again.

"She's not here Jay," Will told him, "what happened?"

"I don't know," he said feeling every bit scared and deflated, "call Hank Voight, I think something terrible has happened."

…

Voight woke to the sound of his phone ringing. It was dark outside, his alarm clock read 1am, no good calls came through at 1am. He picked up the phone and read the caller ID, someone from Med was calling.

"Hello," he said his voice croaky than normal, "Hank Voight here. What do you want?"

"Hi, this is Maggie Lockwood calling from Chicago Med. You need to get down here now?" The tone in her voice said she was serious, not messing around.

"Why? What's happened?" he asked sitting up.

"An ambulance just brought in Jay Halstead. He said to call you?"

"What?" what he was hearing didn't make any sense. "Was Erin with him?"

"No," the woman told him, "you need to get down here now."

"Okay." He ended the call, and dialled Erin's number. It flicked straight through to voicemail, her phone was turned off.

He dressed quickly and began the short drive to the hospital. The urgency in the woman's voice had shaken him; a sick feeling was growing in his gut. Something was wrong, very wrong. He tried not to let his mind jump to conclusions, but as he arrived at the hospital, was directed to Jay's room, his mind jumped to some of the worse things he'd seen.

Jay was half sitting up in a bed, a sheet covering only his mid-section. He was pale as a ghost, streaks of blood and dirt covered his body, deep cuts ran down his arms and chest, his left ankle and foot were a mess.

"What happened?" he asked standing at the foot of the bed.

Jay looked up at him, his eyes were glazy, "I don't know," Jay said sounding totally lost, "Erin's missing, you need to find her."

"What do you mean missing?" He asked, trying to stop his imagination running wild.

"I don't know where she is," he said, "please, you have to find her."

Jay didn't sound like the confident, articulate detective he knew, he sounded so much like the victims, and family members he'd interviewed over the years.

"What happened?" he asked again, pulling his note book out of his back pocket.

"I don't know," Jay said, his voice almost breaking, "the last thing I remember is leaving Molly's and then it's two days later I'm in the park."

"Was Erin with you?"

"At Molly's, I couldn't find her at the park."

"Okay," Hank said still holding it together, he turned to Will, "What can you tell me?" he asked.

Will began rattling off Jay's injuries; he had multiple incisions running up and down his, arms, legs, and body, some looked fresh while others appeared to be a few days old. His left foot and ankle were completely crushed, the nature of the injury suggested it had been pounded multiple times by something large and heavy. They were still waiting on scans and blood work but he suspected a significant amount of blood loss, infection, and an array of drugs to be identified.

Hank wrote everything down, he was mentally trying to catalogue it all, work out where to start with the investigation. He didn't have much to go on.

"Okay," he finally said, "I'm going to call the rest of the team. I want to know as soon as the blood work comes back, and if you remember anything else, you tell someone immediately."

…

Erin lay face down in dirt, tuffs of grass and small rocks dug into her body. Surrounding her on all sides was long tall grass. She tried to lift her head but it felt like lead. Her whole body felt heavy, she didn't know where she was but she knew she couldn't stay there. Slowly she tried to move forward she got one arm up under her body, pushed herself up on one elbow. She looked around, left, right, forward. There was something familiar about where she was but she couldn't place it. She carefully rolled over to see what was behind her. The movement hurt, kept taking her breath away, finally she could see. She knew where she was and it made her blood run cold. The people who'd taken her let her go but she may as well have been left for dead.