Jigsaw - {CS}
↪ Summary: You are the lead detective in an investigation surrounding one of the most infamous killers the city has ever seen. Unfortunately for you, Jigsaw knows you're onto him and has played you like a game at every turn, threatening the case and your status. Your determination to catch him finally gets you a lead, only for you to find yourself tangled in a special trap that he designed just for you. Let the game begin.
↪ Pairings: Jigsaw Killer Choi San x Female Detective Reader
↪ Rating: M 18+
↪ Genre: Non-idol/Slasher/Horror movie au/ Suggestive / Fluff/Friends to enemies to lovers
↪ Word Count: 5.7k
↪ Warnings/Contents: References to classic horror movies, mainly Saw, Silence of the Lambs, and Scream. Mentions of death/murder/being shot (not detailed). Seonghwa and Mingi both make cameos in this story with a few other members being mentioned. Swearing and implied smut (MDNI). San being a teasing little shit, makeout sessions, fondling over clothes.
↪ Side Notes: To the wonderful @pinkywritings hi darling I was your assigned Ghost Writer for the @atinyhalloweenproject. This is my first time writing for San and I had a lot of fun with it so I hope you enjoy it! Sorry it is so late I wanted to have it out by Halloween but due to the sudden weather change we haven't had power. I tried to make it longer to make up for that so hopefully it doesn't feel rushed and was worth the wait!
I honestly may do a part two to this or an expansion later on because I love the idea of Jigsaw San but we'll see.
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“Police officials are seeking any leads in identifying the man known only to the public as the Jigsaw killer. He is believed to be linked in multiple disappearances and murders that have taken place around Seoul for the past three months. The victims were all found in various handmade traps and had a puzzle piece drawn somewhere visible on their body. At this time investigators have no leads and are asking the public for any knowledge they may have on this public threat.”
The reporter's voice faded to nothing as the volume on the TV was lowered to zero. You groaned softly to yourself as you tossed the remote to the side, running your hands through your hair as you sat forward on your couch. It had been just over a month since you were assigned the Jigsaw murder case, the last detective backing out after the man in question threatened to target his family. The case was quickly transferred over to you, one of the best detectives in your field, but it was very quickly starting to test your patience.
Whoever this Jigsaw was, he was a clever man. He left no trace, no evidence, nothing that would allow you to track him down. You went through surveillance, interviewed the family and friends of the victims, tried breaking down his traps for any clues, but any lead always led you right back to square one. You had tried to be patient, hoping that eventually he would slip up and give you something, but it was starting to sound like wishful thinking. Even worse, he knew who you were and started calling you out directly. You would find notes addressed to you, pictures, voice messages, all calling you out and taunting you. It was like he was playing some cruel game with you and you had no choice but to play along or risk losing everything. You couldn’t even walk to work anymore without some reporter chasing you down demanding an explanation or any evidence you had in the case. It came to a point where you only went to the office when called, and the rest of your work you did from home.
Various evidence pictures and case files were thrown across your coffee table, a few rough notes scribbled in between. You had been looking at the same files for the past couple of hours, dissecting every last word to see if you had missed any connections. Your last victim had been found 72 hours ago, and you knew you only had a day at most before the next one. There were a few things you had discovered about Jigsaw, and the main one was that he worked on a schedule. Once someone was reported missing, it would be three days before their body turned up and the cycle would start again. Whoever this man was, he clearly enjoyed his patterns, and that is what you found yourself looking for, any pattern you may have missed.
“Working from home again I see?” you practically jumped out of your skin as you heard the deep voice of your roommate behind you, turning around to see his tall frame leaning over the couch.
“For Fucks sake Mingi you almost gave me a heart attack!” you whined, reaching up to lightly smack at him, “what are you doing here anyways I thought you weren’t coming home tonight.” You and Mingi had been friends for as long as you could remember, having met back in high school and staying together through college and your time at the police academy. He was like a brother to you at this point and you trusted him so you didn’t mind if he saw your work, even if he technically wasn’t supposed to. Mingi always found your work to be fascinating and would bug you randomly about cases, which only grew more when you started investigating Jigsaw, though you assumed it was just because you got to bring your work home now. Just as you predicted, he made his way to the other side of the couch and took a seat next to you, picking up one of the crime scene photos to get a better look.
“I was going to stay at Yunhos tonight but something came up and he had to cancel,” Mingi explained, running his thumb over the picture he was holding, “ouch this looks like it would have been painful, what is it?”
“That’s one of Jigsaw's latest traps,” you answered, snatching the photo away from him, “I’m looking through it to see if I can find any missing clues.”
“Have you found anything?”
“Sadly no, he’s very good at covering his tracks. It’s been a month and we still don’t have any leads on this guy, it’s like he’s a ghost or something.” Mingi hummed softly as he continued to look through all the pictures, careful not to mess them up knowing you would yell at him if he did.
“Now I’m no expert but, are you sure you’re only looking for one person?” he asked, catching you off guard.
“What do you mean?”
“I mean all these crime scenes you’ve shown me have been pretty big and this says it only took three days, seems like a lot of work for one person if you ask me.” Mingi explained, “and that’s why your patterns wouldn’t line up like you want them to.” You blinked up at him dumbly for a moment as you processed his words, looking back down at the file you had basically memorized by this point. You didn’t want to admit it, but Mingi had a point.
“You know that’s actually not a bad idea,” you muttered.
“I can be helpful sometimes you know,” he bragged with a laugh, earning himself a punch to the shoulder. He didn’t have time to retaliate though as you were packing up all of your things and rushing towards the door, “Wait where are you going?”
“I need to check on something, don’t wait up for me!” you called back, pulling on your coat and running out the door as he called after you. In your rush you hadn’t realized that you dropped part of your case file on your way out, nor did you notice Mingi pulling out his phone to call someone as he closed the door to your apartment.
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You made it to the crime scene in no time, an abandoned warehouse located just on the edge of the city. You parked your car a bit away and pulled out a flashlight as you made your way inside, ducking under the caution tape and pulling your jacket closer to yourself as you looked around. The clean up crew had gotten most of the scene cleaned by now, but the trap itself was still there. A weirdly broken mess of chains and blades that you wouldn’t have been able to put back together if you wanted to, making you wonder how Jigsaw even came up with the idea in the first place. You shook the thought out of your head and made your way to one of the blades, leaning down to inspect it carefully. It was sharp with a curve to it, but almost messy in design as if it was handmade. To test that theory you took a look at another one and noticed the same thing except this one was thicker and less curved despite being set up the same way. The chains themselves were also a bit sloppy when you looked at them closely, almost as if they had been done in a rush. It wasn’t as clean as Jigsaw's normal work, and now Mingis suggestion that you were dealing with more than one culprit seemed more plausible.
You took your phone out to snap a picture just as the door to the warehouse opened, a new light pouring in and a familiar voice calling your name.
“Over here!” you called back, flashing your light in his direction so he could see you. Quick footsteps made their way towards you before a familiar figure came into view. Park Seonghwa, a senior detective that had transferred over to your department a little over a year ago and assigned as your partner. You had been against the idea at first since your original partner had been killed only a few weeks prior during an investigation gone wrong. The chief had insisted it would be for the best though since you needed the help and Seonghwas cool and more collected nature would balance you out nicely which would prove to be true. Your impulsiveness had driven the older detective crazy a few times, but for the most part the two of you got along well and you could even consider him a friend. He was wearing a long black coat and matching gloves and his hair was long and falling into his face rather than slicked up like normal, probably because he had been at home resting when you called him.
“Would you care to explain why you called me out here in the middle of the night when I haven’t heard from you in the last 48 hours?” Seonghwa questioned, unable to hide the annoyance in his tone.
“I’ll make it up to you but I figured this couldn’t wait,” you muttered, going back to inspect the chain again, “I’m trying to prove a theory about something.”
“That theory being?”
“What if Jigsaw isn't working alone?” you challenged, “what if it’s more than one person, that would explain why nothing lines up.” Seonghwas eyes widened a bit and you could have sworn you heard him mutter something under his breath, “what did you say?”
“Oh nothing,” he brushed you off, “what made you so convinced of this new theory? Did you find something?” You froze for a second, not wanting to expose yourself for letting a member of the general public view the case file.
“Just a hunch,” you lied, “but I mean look at the way this trap was built, it's messy compared to the others, almost as if it was made by someone else.”
“Or maybe Jigsaw just ran out of time and rushed on it,” he argued.
“Can you just humor me for five seconds Seonghwa,” you groaned, “maybe I’m wrong yes but isn’t it at least worth looking into?” Seonghwa rolled his eyes but gave in, walking to the other side of the trap to get a better look. You were too distracted by your own work to pay much attention to him, meticulously looking through every detail of the trap despite not actually knowing what you were looking for. Your instinct was telling you that there was something there you were overlooking, something that was hiding in plain sight, you just had to figure out what that was.
“Hey Y/N,” Seonghwa called out after a few minutes, “I think I found something.” Your head shot up and you quickly dusted yourself off before making your way over. Seonghwa was standing in the corner of the warehouse holding what looked to be a tape recorder. “I found it tucked away over here, may have gotten knocked around during the investigation,” he explained.
“Does it say anything?” you asked, taking the recorder from his hands and pressing the play button. There was only static for a moment before a robotic voice spoke up, like someone was speaking through a voice changer. Despite that, you couldn’t help but feel like the voice seemed familiar to you, but it was hard to tell through the editing.
“Hello Detective Y/L/N,” the tape addressed you, sending a chill through your body, “these past few weeks you have been running around in circles trying to discover who I am. You have been closer to the truth than you realize but you always end up blindsided by your work and, as a result, you overlook the answer that is right in front of you. I have enjoyed silently watching you up until this point but now it is getting quite boring so why don’t we make this a bit more fun? Do you like games, detective? I hope you do because I want to play a game with you. I have left a riddle for you, the answer to which will tell you all you need to know about who I am and what I do. You have 48 hours to find the riddle and tell me the answer or you will find yourself and those closest to you in a very undesirable situation. The timer starts the second this recording ends, let’s hope you are as clever as everyone says you are. Let the game begin.”
You felt your blood run cold as the tape came to an end, barely registering Seonghwas hand on your shoulder as you tried to process everything you just heard. Seonghwa tried talking to you but you ignored him, pushing his hand off and rushing back to your car, your partner not far behind you.
“Where are you going? We should report this to the office first!” he called after you.
“What good is reporting it going to do? You heard him Hwa I have 48 hours to figure out who this guy is or we’re all screwed, I can’t waste time.”
“So what you’re going to rush into something and get yourself killed?” he argued.
“Better than doing nothing and getting everyone else killed,” you snapped back, “now if you’ll excuse me, I need to find this riddle he’s talking about.” Seonghwa called after you again but by this point you had gotten in your car and were already making your way back to your apartment. Part of you felt like going home was a bad idea, but you also couldn’t help but feel like something was pulling you to go there. The same feeling of familiarity that you got hearing the tape returned, making you feel more and more uneasy as you pulled into your apartment complex. Like you knew who Jigsaw was and yet the image of his face was blurred any time you tried to imagine him.
Mingi didn’t seem to be home when you got back, his shoes were gone and the light was off. You couldn’t focus on that though, as your attention was drawn to the stack of papers placed neatly on your coffee table. You carefully walked over and looked through the pile, recognizing pictures from all the different crime scenes you had investigated so far, each one marked with red ink.
‘Y/N, doesn’t this random pattern seem a bit too random?’
‘This is quite close to home don’t you think?’
‘The truth has been in front of you the whole time.’
‘Why do I do what I do?’
‘Did you miss me?’
You ran your hand through your hair as you continued looking through the pictures, realizing that the riddle was basically going to send you on a scavenger hunt. It would take forever for you to go back through each crime scene and look back through everything to find out what he was talking about. Even worse, it was pretty late and you could feel exhaustion slowly taking over you, slouching over the coffee table and eventually laying against it as you fell asleep trying to decipher the riddle.
You were jolted awake by the sound of your phone vibrating, groaning softly as you sat up and reached into your pocket for the device. You half expected it to be a call from Mingi or Seonghwa, but instead you were greeted with the same robotic voice from the night before. Only this time, you were able to hear his actual voice a bit more and it was one you swore you had heard before.
“Good morning Sleeping Beauty, I hope my riddle didn’t keep you up all night,” the voice immediately woke you up, straightening your posture as you looked around.
“Who is this?” you asked.
“Aww I’m almost offended you don’t remember me, we go way back you know,” the voice responded, “I’ve missed you Y/N, and even if you don’t remember me now I know you miss me too.” You paused for a moment at his words before realizing now was not the time to worry about that.
“Why are you doing this?”
“That. my dear detective is for you to find out, you always did enjoy the thrill of a good challenge didn’t you? I figured you would have solved my puzzle by now but since I believe in giving people a fair chance I’ll give you another clue. One of those puzzle pieces doesn’t quite belong, once you find the answer I will be waiting for you in the place we last met, don’t keep me waiting Doll.” With that the call ended, causing you to groan in frustration and toss your phone to the side.
“I’ve had about enough of these damn games,” you huffed, rubbing your hands over your eyes. You looked through the pictures again before one in particular caught your eye. It wasn’t one of the Jigsaw crime scenes, but instead it was a picture of an older house, one that you recognized from your last murder investigation with your old partner, San. The memories slowly came back to you and that’s when it finally clicked for you, the puzzle and the reason the voice sounded so familiar to you. That was impossible though, San was dead, you had been at the hospital with him when the doctors told you there was nothing they could do. There was no way that San was still alive, and yet you would recognize his voice anywhere. Shaking your head, you grabbed your phone and stood up, calling Seonghwa and telling him to meet you at the house in question as you left your apartment and got in your car. The whole ride there you tried ignoring the feeling of dread that came over you, hoping that your intuition was wrong.
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Seonghwa was already at the house before you got there, leaning against the wall with a blank expression. “I take it you found the answer to your riddle?” he asked as you walked past him, leading him inside.
“As much as I hope I am wrong I think I did,” you confessed, “and if I’m right the clue we are looking for should be here somewhere.” Seonghwa stood still in the middle of the room as you frantically looked around, digging through his pocket and following your movements with his eyes.
“This isn’t one of the crime scenes,” he pointed out, “what exactly are we looking for?”
“Jigsaw said to find him at the place we last met and this place was the only one pictured that wasn’t one of the crime scenes,” you explained. Seonghwa hummed softly at your answer, but you ignored him as you continued looking around.
“Why here then, what’s so special about this place?” you froze for a moment at the question, an action that didn’t go unnoticed.
“This was the last place I investigated with my first partner,” you answered, “he was shot during the investigation and I thought he was dead but I’m starting to think I was wrong.”
“You think it’s him,” Seonghwa stated rather than asked, to which you nodded.
“I don’t know why he would do such a thing, but it all lines up.” Seonghwa sighed and glanced down at his watch before making his way towards you.
“I’m surprised you know, you solved the riddle faster than we thought you would, we’re a bit ahead of schedule.” His words made your blood run cold, freezing as your head turned to look at him.
“What did you just say?”
“I’m sorry about this Y/N,” Seonghwa apologized, reaching into his pocket and pulling out a syringe, “just know I don’t make the rules, I’m just the delivery guy.” Before you could react to his words he had grabbed you and injected you with what you assumed was some kind of anesthesia, your body going limp in his hold almost immediately and your vision going black. The last thing you remember hearing was his voice and footsteps approaching before you completely lost consciousness.
When you returned to consciousness the first thing that you noticed was that you couldn’t move. Your arms and legs were handcuffed to a chair that also appeared to be bolted to the floor so you couldn’t tip it over. Tugging at your restraints, you glanced around to find that you were in some sort of workshop, various trap parts and gadgets tossed around multiple workbenches. At the front of the room were what appeared to be security monitors, each watching different parts of the city that you could just barely make out.
“I have to hand it to you Y/N,” a voice said from behind you, “the last detective didn’t make it nearly as far.” The sound of footsteps echoed through the room before a figure appeared in your vision, wearing a full body red and black hood. Even though his face was covered by the hood, you could feel the presence of your former partner.
“How, I thought you were dead,” you whispered, not sure what to feel at the moment. In any other circumstance you would be over the moon to know he was alive, but how were you supposed to feel knowing he was the serial killer you had been anxiously tracking down. Shock, betrayal, anger, sadness, confusion, all of these emotions swirled through your brain like an endless whirlpool, pulling you in deeper and nearly bringing tears to your eyes.
“Everyone did,” San replied, turning away from you to face one of his work benches, “the doctors said it was a miracle, that no one thought I would make it through the night let alone make a full recovery.” You could hear him messing with something, but couldn’t see what it was, struggling to look past his shoulder as he continued talking, “I tried to find you after you know? I thought you were the only one left that cared about me, and yet even you managed to turn your back on me.”
“I always cared about you,” you argued, “that’s why I’m trying to understand why San, why did you do this?” It was at this point that he finally turned to face you, pulling the hood back so you could see him properly. He looked almost the same as you remembered, but there was a cold gaze in his eyes that almost made him feel like a stranger. This wasn’t the warm hearted and cheerful person you used to consider a friend, he was a killer. Despite this, however, you couldn’t help yourself from falling for his familiarity, almost as if you could convince yourself the old San was still in there, somewhere.
“You never realize just how valuable life is until you are inches away from death,” he explained, “the adrenaline and the fight to survive, it almost feels like you are being reborn. The more I thought about it, the more I realized how corrupt the world we live in truly is, because no one really knows how to appreciate the life they are given until it is nearly taken from them. You may not understand it now but trust me my methods will help make the world a better place.”
“You’re killing people because you want them to appreciate life?” you questioned, wondering if he was actually being serious. There was no way a person's mind could be that twisted, right?
“You think I’m a killer?” San asked, not needing a verbal response since your glare was enough confirmation, “that’s where you’re wrong you know. I have not killed anyone, all of my games are survivable as long as the player has the will to fight for it. Those who failed the games basically killed themselves.” You wanted to argue that putting people in these death traps still made him a killer but he cut you off, “Seven people have won so far, seven people who had that will to live and had the chance to be reborn. They understand what it truly means to be alive and now they help me spread my message. You may not understand me now, but I really do hope that you will be the next.”
“So what, am I the next person that gets to be put in one of your death traps then?” you groaned, tugging at your restraints. San pouted a bit but shook his head.
“Your game began the minute you took the case from Detective Kim,” he explained, “you and I always seemed to have an understanding so I had hoped you would pick up on my clues and join without a fight, but you were far too stubborn to listen. Eventually I had to cut my losses so I had my apprentices plant fake evidence to finally get you here, it was the only way.” Your heart dropped a bit at the word apprentices, your mind immediately going back to Seonghwa and how he was the one who brought you here.
“So you’re telling me the whole time,” you trailed off.
“Seonghwa was working for me, yes, Mingi as well, they both survived my games and agreed to help with the cause and when you took over my case I knew I could use them to guide you in the right direction,” San explained. He took a moment to glance at a clock on the wall before sighing and making his way over to you. San rested his hands on the arms of the chair and used them to prop himself up so he was leaning over you, “As much as I have enjoyed our little chat I’m afraid we do not have much time. I really do like you Y/N so I will give you a choice. Join me and together we can help change the world for the better.”
“And if I refuse?” you challenged.
“Well then I guess we’ll have to play a game,” he hummed, leaning away from you, “The second I walk out of this room it will lock and a timer will start. Behind you are two doors, each with a different combination, one door will lead you to the exit, and the other will lead you to me. If you choose to leave then you will be free but you will lose your chance to catch me. If you choose to come after me, then you have a chance to learn the truth at the risk of your freedom. The combinations are hidden in this room and you will have exactly one hour to find them and leave through the door of your choosing, and trust me you don’t want to know what will happen if you run out of time.” San chuckled softly before pulling away and walking behind you, “This is your last chance to accept my offer Y/N, I would hate to lose you like this.” He waited for a moment but when you didn’t respond he sighed, “Very well, let the game begin.” You felt him place something into your hand, which you quickly realized was a key, before the door slammed shut and San was gone.
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It didn’t take you long to unlock yourself, taking a second to rub your wrists as you stood up and made your way cautiously around the room. You did your best to stay calm and not look at the clock as you examined the doors and then looked around for the combinations, which you quickly realized were hidden on his tools. The question was, do you free yourself and turn your back on the case, or do you risk it all and try to go after San. The rational part of your brain was screaming at you to just get out of there and not look back, and yet you quickly found yourself moving on autopilot. Before you could really process what you were doing, you had entered the code for the door labeled “Truth” and ran through it, stepping into a dark hallway and letting the door lock behind you.
You took a moment to compose yourself before heading forward, placing your hands against the walls to help feel your way through the space. All the doors were locked until you came to one at the very end that was cracked open, revealing what looked to be a makeshift office space, with nothing but a desk and filing cabinet in the room. You poked your head through first, looking around for any sign of life before slowly stepping inside and making your way to the desk, only to gasp as you felt another body pin you to it.
“I knew you would come after me,” San whispered, spinning you around so that you were facing him. Your body was pressed between his and the desk, his arms caging you on either side as your eyes locked.
“I can’t let you get away with this,” you argued, trying to wiggle away from him but San was stronger so he held you in place.
“Come on Doll, you and I both know that’s not why you came after me,” he teased, “maybe it was at first but if that was the case now you would be fighting me harder.” He was right, even if he was stronger you knew you could at least hold your own enough to get him away or subdue him long enough to call for help. Yet you couldn’t bring yourself to actually fight him off, struggling against him enough to save your pride but not enough to actually push him off. “So tell me,” San continued, “why did you really come after me, was it because you were curious about my work? Or, was it because deep down you missed me?” Honestly, you weren’t even sure if you knew the answer, your body having reacted before your mind could catch up.
“This isn’t right,” you argued, reaching your hands up to push at his shoulders.
“And yet here we are,” he teased, backing up enough to wrap his arms around you and pull you closer to him. Your bodies pressed together and your arms instinctually made their way around his neck which made him chuckle. “I always knew you were special, you understood me in a way that no one else ever did. Stay with me, nothing will be able to come between us.” San leaned down until your lips were centimeters apart, his breath tickling your lips with every word. You tried not to give into him, knowing that this was wrong, but you also couldn’t deny the thrill that ran through you just from being near him. You had always cared for San when you two were partners, hell there was even a time where you could argue that you did have a crush on him. That was back then however, when he was the sweet and easy going detective that decorated his desk with mini plushies and would whine if you forgot to get him a pastry on your morning coffee runs. This version of San wasn’t like that, even if the allure was still there, he was cold, twisted, and a killer.
“I can’t do this,” you argued, “you’re not the man I once cared about.” You tried to turn your head away from him, but he gripped your chin to force you to look at him.
“Yes I am, behind all of this it is still me and I can prove that to you,” he whispered, “just let me show you.” When you shook your head again he huffed, loosening his grip for a moment before it tightened again, “Fine then, how about another game?”
“I already won your stupid game though!” you challenged.
“Yet you still haven’t learned,” he fought back, “the least you can do is give me a chance to convince you. If you don’t give in then I will go with you to the station and turn myself in, but if I win then you quit being a detective for good and you stay with me.” You gave him a questioning look, at this point more than positive that he had gone insane. However, if playing his dumb games meant putting an end to Jigsaw, then you were more than willing to oblige.
“Alright fine, deal,” you reluctantly agreed. You only had a moment to register Sans smirk before he was pulling you against him again and connecting your lips. One hand stayed pressed against your back to keep you against him, while the other tangled itself in your hair, tugging slightly to get a reaction out of you. The kiss wasn’t rough or forced like you had expected, instead it was gentle and passionate, like he wanted to take his time with you. His lips were surprisingly soft against yours, and you began to slowly melt against his movements. You kissed him back and allowed him to have more control, whining softly against his lips when he tugged a bit harder at your hair. Your own hands trailed down his body, tracing his shoulders and chest for a few moments before daring to go a bit lower. San groaned as he felt you palm him over his robe, tightening his grip on your hair and deepening the kiss as his own hand reached down to grab at your thighs and your ass.
All your resolve melted away at his touch and you found yourself giving into him completely, relishing in the way he invaded your senses. All rationality had left completely, replaced with an unusual desire as San explored your body. As desperate as he was, his touches remained soft and left you craving more whenever he pulled his hand away. San walked you back until you reached the desk, lifting you up enough to sit you on top of it and slotting himself between your thighs as he finally pulled away. You only had a second to catch your breath before you were pushed back slightly and pinned down by your hands. San hovered above you with a knowing smirk, taking a moment to enjoy your flustered expression before leaning down to whisper directly in your ear.
“Looks like I won. Game Over!”
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