Author's Notes:

'sup peeps! I'm going to try something here. Yes, a multi-chapter semi-horror Young Justice fanfic. I've been playing around with his idea for a few weeks now (ever since I watch Hetaoni, actually) and I wanted to try it out. Mind you, I am a total wimp when it comes to horror. I can't handle it for shit, but… I wanted to try to write this anyway.

Basically, I want to lock up a bunch of YJ peeps in a mansion they can't escape with a creepy monster and attempt to write something that will eventually become a total emotional roller coaster. Wish me luck, haha.

(Another thing, I plan on making this fic cross over with the Young Justice comic book—the mansion they are trapped just happens to be a loop in the space-time continuum, which is the perfect excuse to make a crossover. You can expect Kon, Tim, Bart and the rest to show up eventually)

Pairing-wise, I have nothing in mind yet. I'm going with the flow here, so yeah. Enjoy and review guys.

(yes, this is slightly based off Hetaoni-but not by much, i'm just borrowing the setting-and yes, i know Hetaoni is based off Aooni-)

What if curiosity did kill the cat?

-0-

Chapter One: Trapped

-0-

Robin was sitting in the batcave alone with the computer. Alfred was upstairs preparing dinner and Bruce—well Batman, was on a mission with Justice League. The Boy Wonder had just come back from a patrol and was now staring at Gotham's map on the bat-computer without much interest. He was this close to getting up and going off to train the gym. He would just have to tell Alfred he was coming upstairs, but then… What was that? There was a blank towards the bottom right on the screen; a few miles off the borders of Gotham city. Why was there a blank? It was just black. It was as if that place didn't exist. Robin raised a brow, intrigued. Why wasn't anything coming up on the map? He checked, zoomed in. It was still black. As far as he knew, there should be a forest there. Why weren't treescoming up on the map? What was the meaning of this empty space? He should check it out. Just a quick recon mission. No biggie. If there was a problem, he'd contact someone. It probably wasn't a big deal. Maybe it was just a glitch, but Robin was bored and curious.

Alright, but maybe he could call Wally just to have some back-up. "Wally, you free?" He said, taking out his phone and speed-dialling his best friend.

"Albays. Wahshup?" The speedster replied. Robin could tell he was eating. Hard not to.

"Something possibly fun. Meet me southeast of Gotham City. Just beyond the border."

Wally swallowed. "Gotcha."

-0-

Half an hour later, Kid Flash finally showed up. Robin had his knuckles on his waist and glared at his friend from under the mask. "You're late!"

"We never settled on a time, dude. Quit complaining. Besides, I brought Supey." KF pointed at the clone who was catching up behind him. "He looked bored so I made him come. So what are we looking at?"

Robin sighed, taking out his computer-thingy and running scans on the mansion before them from the outside. He got nothing. According to his tech, none of the patch of land they were standing on even existed in the first place. That was just weird and completely impossible. They were there. How could the computer say it doesn't exist?

Supey was looking over Rob's shoulder curiously. "It's red."

"Yeah and red isn't good. I can't run any scans here. This place isn't supposed to exist."

Wally sped over to the Boy Wonder's side. "Really? Maybe your toy is broken, Rob. I'm going in ahead then to check things out."

"Wally, wait it might be—! Damnit, he's gone already." Robin put his comp away and started walking. "Come on Supey. We should catch up to him before the idiot does anything horrifically stupid."

On sight, the mansion looked it was four stories high. From the windows hanging right above the ground, Robin also assumed there was a basement. He and Supey walked inside into a long corridor stretching to their left and their right. Long stairs stood in front of them and another hallway stretched beyond as well. The place was huge, but it was barely furnished. Supey's face scrunched up in discomfort. Something didn't feel right. Robin felt it too. There was something dry about the atmosphere. It felt cold, empty and utterly desolate. Robin tried to the scan the place again, but to no avail. He got nothing but static.

"I don't like this place,"

If it were any other occasion, Robin would crack joke, but he couldn't. Superboy was right. There was definitely something off about this place. They had to find Wally and fast. "We have to look for Wally. I'll check the first floor. You go upstairs."

Supey frowned. He didn't like being told what to do, but more than that… "Are you sure?"

"What do you mean?"

"Do you think it's safe to split up?" Supey shrugged.

"Yeah…?" Robin hesitated. He didn't usually do that, but he did. "Look, what's the worst that can happen?"

"Right." Superboy breathed. He had super strength and Robin was strong despite his humanity. They'd be fine on their own. "Meet back here?"

The Boy Wonder nodded. "Fifteen minutes, alright?"

The clone nodded and headed up stairs. Robin watched him for a moment before going down the first hallway on this right. The place was really bare. There was barely any furniture. There were zero paintings on the wall. No fancy carpet. No empty knight armour. No plants. No gorgeous lanterns. The windows didn't even have curtains. It wasn't like Robin was expecting every mansion to be as beautiful as the Wayne Manor, but this… this was ridiculous. There was literally nothing—What was that?

Robin turned around. He could have sworn he heard something. A strong thud. Footsteps? The Boy Wonder looked around. There weren't any vents. He clicked his tongue, taking out his bat-grapple and grappling the ceiling. He hung there upside down like a bat.

The footsteps got louder. Something was coming down the hallway. It was a… a shadow? What… what was that? An alien? It looked like a burnt teletubbie. Oh… oh god… The thing looked up. It looked up and stared directly at Robin with the scariest look the Boy Wonder had ever seen. This was coming from someone who fought with Two-Face and Joker countless times. But there was a difference here. Joker was insane. And Two-Face was… well, also insane, but in a completely different way. This alien… thing… It just stared at him the same way a baby would. With a strange kind of interest and curiosity. Just add the thirst.

The Boy Wonder froze for a whole second before regaining composure. It was just a more-than-creepy-monster. No biggie.

Robin reached in the back of his utility belt and threw a few mini-robin-bombs at the monster. No effect. The thing wasn't even fazed. Shit. Bad news. The acrobat swung from the ceiling to the thing's shoulders and tried spraying knockout gas in its eyes. Nothing again. The alien grabbed his legs and threw him across the hallway into the next room.

The Boy Wonder coughed out blood and got up. The thing was running towards him with speed something that huge shouldn't have. Shit, shit, shit, damn. Robin took out his extendable staff and charged for the monster, pressing a button in attempts to electrocute it. It seemed to affect it slightly, but in a moment, the thing grunted and pulled the staff out. "W-what?"

"nO eScApE!"

The next moment, Robin was flung down the hallway again. "Okaaaay, the direct approach is definitely not working here." He mumbled to himself. The Boy Wonder ran through options in this head. All of which included running away, finding Supey and/or Wally and getting the hell out of there.

He grappled the ceiling again and flew over the monster, running down the hall, then up the stairs. The sound of footsteps faded. Robin paused for a moment to listen more carefully. It was silent again. It looked like the thing wasn't going to follow him up. What the hell was that? He sighed, scratching his head before looking around.

"Supey? KF?" He shouted down the hall. The empty air answered him. "Damnit."

Robin checked all the rooms on the floor. He was starting to panic. Where did Supey go? Where was KF? Why couldn't he hear anything? What was up with this place? It wasn't normal. None of this was normal. What was he so scared about? Robin shrugged and rubbed his shoulders trying to get rid of the chills. Maybe he had just missed Superboy on his way downstairs. Maybe the clone had already found KF and was waiting for him at the front door. The Boy Wonder kept his thoughts optimistic as he slowly descended from the stairs. The weird alien wasn't anywhere to be seen…

"Supey!" Without thinking, the acrobat leaped towards the clone, hanging at his neck happily. "Didn't find KF?"

Superboy shook his head. "I went all the way upstairs too. I didn't find anyone."

"That's weird." Robin released Supey and stood beside him, crossing his arms. "You have super hearing. Can't you hear him?"

The clone made a complicated face and rubbed his temple. "I can't hear anything." When Robin gave him a look, Supey continued. "I can't super hear anything."

Wait, was Supey saying that the whole mansion was just completely silent? Or… Or maybe, just maybe… could it be something else? Robin had a theory forming in his mind, but he wasn't sure yet. He couldn't be sure until he tested it. But he could do that later. The Boy Wonder took it cell phone. No signal. Figures. "Come on Supey, we have to find KF."

Robin walked ahead up the stairs, the clone following directly behind him. "Say, you didn't happen to run into anything did you?"

"No,"

Robin shrugged. "Keep your guard up. There was a monster here earlier."

"A monster?"

"Not sure what it was, but nothing worked on it." The Boy Wonder bit his bottom lip.

The two of them checked all the rooms on the floor again. Still nothing. There was no sign of life anywhere. It was starting to get really eerie. Back in the halls again, Supey looked out the window. It was dark outside. Had night fallen already? That didn't make any sense. It was early in the afternoon when they had gone inside the mansion. It couldn't possibly look this late outside. Confused, he tapped Rob's shoulder and pointed outside. The Boy Wonder looked and made the same confused look. "What time is it?"

He took his cellphone out. Still no signal and… 3PM? Robin blinked and looked outside. It looked like it was nearly midnight out there. Then how? "Okay, this is getting a little too weird."

Superboy remained silent as Robin continued to lead the way. They checked the upper floors. Most of the doors were locked. They tried knocking and calling for Wally, but nothing. There wasn't a sound. In this situation, the Boy Wonder would have preferred facing that monster again.

Exhausted from their endless turns around the mansion, the two settled in one of the rooms on the second floor. There was a fireplace and, oddly enough, a fire lit. There were crumbs on the table and several other traces of life. Someone had been there earlier. An hour, at most, ago. Supey picked up a wrapper from the floor. It was an energy bar. KF must have been there. But where was he now and how come they haven't run into him yet? Why wasn't there any sign of him anywhere else?

"What's going on?" Superboy asked, taking one of the seats at the long table. Robin stood in front of the fire.

"Maybe… Just maybe, we're in hole in the space-time continuum."

"Right,"

"It's a theory."

"How likely?"

"Right now? Really likely." The Boy Wonder shrugged, sitting sideways on the seat beside Superboy's. "I actually can't think of any other possibility. Maybe that's why we can't find KF. Maybe, because he went in before us, he's traveling on a completely different timeline. If we stay still, there's a higher chance we'll run into him. I hope."

Superboy didn't look like he really understood the idea. "Or, he could have left already."

Robin blinked. Now how the fuck did he not think of that possibility yet? "True," He stood up. "Come on, let's go check outside. Why didn't you say so sooner?"

"Didn't think of it,"

The Boy Wonder regained his usual optimism. The two headed back downstairs to the front door. Robin almost ran for the door. His hands reached the knob. He twisted it. Pulled it. The door clicked. Rob pulled it harder. The door shook. What? He pulled it again, again, again, again, again, again, and again. It wouldn't open. Why? How… What the hell?

"The door won't open." Robin announced. "It won't… open…"

Superboy frowned. "Move out of the way. I'll break it."

The Boy Wonder skipped out of Supey's way as the clone lunged forward towards the door. Robin expected smoke and a boom, but nothing. The door was still there. This time, Supey was surprised. "Ouch."

"Ouch?" Rob repeated. "What do you mean 'ouch'?"

"It hurt."

They both stared at each other. That's when it finally hit Robin. Hard. Like an epiphany. "Your powers. They don't work here."

"What?"

"That's why you can't hear anything. That's why you can't break the door. Well, with your body mass, the door still should have broken… but either way, that lunge shouldn't have hurt you Supey."

"Let me get this straight," Superboy finally looked like he understood exactly what was happening. "We're stuck in a mansion with a monster only you've seen so far with no way out and I can't even use super strength?"

"That does sound like our situation…" Robin bit his lip again. "We can try the windows. It's just glass."

Or maybe it wasn't just glass. No matter how many times the two of them tried to destroy the windows, nothing. They didn't break. They showed no signs of breaking either. It was completely and utterly futile. "That's it. We're really trapped in here."

Superboy's stomach growled. "Without food either."

They both sat by the front door, wondering what to do. Or at least, Robin was trying to figure out what to do. First, he had to stay calm. That's one of the first things Batman ever thought him. If he panicked, he would accomplish nothing. So Robin took a deep breath and thought things over. But nothing. He couldn't think of anything.

He took his cellphone out again 3:15PM. Once again, that made absolutely no sense at all. He and Supey must have been running around like idiots for at least three hours. How could only fifteen minutes have passed?

That's when they heard a crash down the hall. Superboy and Robin stood up immediately alert. It was coming from the kitchen.

"Roy!" Robin exclaimed as he burst into the room.

There was Roy Harper in his Red Arrow outfit fighting the burnt teletubbie. At seeing Rob and Supey, he stopped for a moment. "You two!" He exclaimed, but was cut off by the monster's attack. He clicked his tongue and dodged, knocking down the table and using it as a shield before hitting the alien with a few arrows.

Robin expected it to do nothing, but it worked. The monster groaned and vanished into thin air. Supey watched it in completely awe. Rob ran over to Red. "Are you okay?"

The older teenager frowned. "Am I okay? What about you two!" He stood up and put his bow away. "You guys have been missing for four whole days. Everyone's worried about you!"

Robin's eyes widened from under the mask. "What did you just say?"

"Like I said, you two have…"

"Four days?" Robin repeated. "But how could that be? It felt like a few hours, not… not days!"

"Huh? What are you saying, Robin?" Red Arrow crossed his arms, looking at the smaller boy with an incredulous look. "You, Superboy and Kid Flash haven't been seen in days. Everyone was worried. Batman sent out a search team. I was looking on the outskirts of Gotham when I saw the mansion and… Oh yeah, where is Kid anyway?"

Superboy walked over towards them. "We can't find him."

Robin stared at the floor. He was doing some quick math. It must have been around 2:30PM when he, Superboy and Kid Flash arrived at the mansion. According to his phone, it's only been 45 minutes, which was completely impossible, but if he believed it then… "Spee—I mean, Red Arrow…"

"What is it?"

"When did you get here?"

"Huh? Around 6PM, I guess."

"What day?"

"Well, Tuesday."

Very complicated equations ran through Rob's mind. It hurt. He wished his computer would work, but he still got nothing but static. He'd had to run these calculations with his mind alone. But still. What was he expecting? Some kind of logic in the way time worked in this mansion? Robin wasn't going to find anything. Everything that was supposed to be true became a lie here. If KF had gone inside only two or three minutes before he and Superboy, how much time had passed for him then?

Knowing the speedster, KF would have made several rounds of the place before he and Supey even reached the door.

In that case, just how long was KF trapped in here?

Robin found himself losing composure. He swallowed hard. "We have to find Wally"