I practically burst into Sophie's room.

"Sophie! Sophie!" I shook her little shoulder urgently.

Mom sat up in her bed, rubbing her eyes. "Chloe? What is it? It's so late—"

"Did Santa have his big sack of presents?!" I cut her off, staring at Sophie's sleepy face.

Sophie blinked, groggy. "What?"

"The Santa who came out of the chimney!" My voice was shaking. "Did he have his big sack of presents?"

Sophie shook her head, her voice tiny. "No… He had a sack on his back, but it was all lumpy and wrinkled. And it was moving."

My blood ran cold.

"What do you mean, it was moving?"

"Like…" Sophie made a squirming motion with her little hands. "Like there were things inside, wiggling around. Not presents. Something else."

The answer horrified me.

A kid making up a lie would never forget Santa's iconic gift sack. And they definitely wouldn't describe it as a "lumpy, moving sack."

"Chloe, are you crazy?" Mom said, her voice sharp with impatience. "Scaring her in the middle of the night! Sophie needs to sleep!"

"Mom, I think—"

"Get out!" Mom pointed at the door. "Let Sophie sleep!"

I was pushed out of the room, the door slamming shut behind me.

The hallway was silent except for my own ragged breathing.

Sophie's words echoed in my head: lumpy, wrinkled, and it was moving. Not presents.

Shaking, I went back to my room and opened my laptop.

The NoSleep subreddit was always active late at night, a place for people all over the world to share their terrifying experiences.

I started typing.

Title: My 5-year-old sister saw "Santa," but her description is terrifying. Help.

Hey everyone, I need help. Two days ago, my five-year-old sister said she saw Santa Claus in our house, but her description doesn't match the traditional image at all. She said this "Santa" had long, spider-like fingers, too many joints, crawled like a four-legged animal, and after climbing out of our chimney, it just stood silently in the corner of our living room, watching us for an hour.

Most importantly, when I asked if this "Santa" had a gift sack, she said no. Just a lumpy, wrinkled, moving sack on its back.

Sophie never lies, and the details she gave are too specific. I'm terrified this isn't her imagination. Has anyone ever experienced anything like this?

We live in a single-family house in Michigan. We do have a fireplace and chimney.

Please, if anyone knows what this is, tell me.

After posting, I anxiously refreshed the page.

The first few replies made my heart sink.

[Nice story, but work on your plot holes. A 5-year-old's imagination isn't that specific.]

[Another one farming for karma. The Christmas theme is a nice touch, though.]

[I have a 5-year-old daughter. They mix up nightmares and reality all the time. Don't worry about it.]

[6/10. Good atmosphere, but the story lacks a climax.]

My eyes started to burn with tears.

No one believed me. They all thought it was a story I'd made up.

But I kept waiting, refreshing the page again and again.

By midnight, there were dozens of comments, all of them either skeptical or offering "writing advice."

I sat on my bed, hugging my knees, a wave of helplessness washing over me.

Maybe they were right. Maybe I was overthinking it. Maybe Sophie just had a really bad nightmare.

But my gut told me it wasn't that simple.

I refreshed the page one last time.

It was 12:47 AM now, and the new replies had slowed to a trickle.

My eyelids grew heavy. My head was swimming with doubt and fear, and exhaustion finally pulled me under.

Just then, a red "1" popped up in my DMs.

I didn't see the message until I woke up the next morning.

The sender was NocturneNotes. No profile picture, and their profile page was almost completely blank.

NocturneNotes: Your sister isn't lying. That thing is dangerous.

My heart immediately started pounding.

I replied instantly: Do you know what it is? Please tell me!

A few minutes later, a reply came.

NocturneNotes: The real Santa Claus doesn't bring gifts. Anything that enters your home can't be the real Santa.

The message confused me. What did that mean?

NocturneNotes: I need you to run a test. Tonight, at exactly midnight, hang a small gift box on your Christmas tree. Inside the box, put one gingerbread man cookie. Any brand will do. Then hide and watch. Remember, exactly at midnight. Not a minute sooner, not a minute later.

NocturneNotes: If I'm right, you'll need to act fast.

His words sent a shiver down my spine.

I spent the entire day in a state of high anxiety.

Mom and Dad were preparing Christmas dinner as usual. Sophie was in the living room playing with a new doll. Everything seemed so normal, so warm.

But I knew something was wrong. Something was lurking.

At dinner, I could barely eat.

"Chloe, you look pale," Dad said with concern. "Are you staying up too late?"

"I'm fine," I managed, forcing a smile.

Sophie sat across from me, carefully cutting her turkey. She seemed much better than yesterday, even humming a Christmas carol.

At 11:00 PM, I snuck a gingerbread cookie from the kitchen and put it in a small gift box.

I hung the box on a branch near the middle of the tree, then hid behind an armchair in the corner of the living room.

The only light came from the twinkling Christmas tree lights, casting shifting shadows across the room.

11:58 PM.

11:59 PM.

Midnight.

The church bells in the distance chimed twelve times, each heavy toll echoing in the silent night.

For the first five minutes, nothing happened.

I started to wonder if NocturneNotes was just messing with me, like the other Redditors.

Then, in the seventh minute, I heard it. A faint, tiny sound.

Crunch.

Like something biting into something hard.

The sound was coming from the red gift box.

I held my breath, staring at the tree. The gift box was swaying slightly on its branch, and the swaying was getting stronger.

Crunch, crunch.

The biting sound grew louder, more frantic, like something was devouring the cookie inside.

My whole body was trembling, but I didn't dare move or make a sound.

After ten minutes, the noise stopped.

I waited and waited, making sure everything was quiet before I shakily stood up.

I walked to the Christmas tree and carefully took down the box.

It felt noticeably lighter, and there was a strange, rotten smell coming from it.

I opened the box.

The gingerbread man was gone.

In its place was a pile of fine, black powder that stank of mold and rotting meat.

I almost threw up.

I ran back to my room and typed a message to NocturneNotes with trembling fingers: The cookie is gone! It turned into black powder, and it’s moving! What the hell is this?!

The reply was almost instantaneous: Add me on Discord. Now. We need to voice chat.

I immediately opened Discord and searched for the user.

I sent a friend request.

Two seconds later, it was accepted.

A message popped up immediately after.

NocturneNotes: Your house has been marked. Your whole family is going to die.

My phone almost slipped from my hand.

Going to die? What does that mean?

I immediately started a voice call. It rang twice before he picked up.

"Hello?" His voice was calm, a young man.

"Please tell me what's happening!" I was practically sobbing. "What do you mean my whole family is going to die?!"

"Calm down," he said, his tone unnervingly level. "Whether you live or die depends on luck. But if you're willing to trust me and follow my instructions exactly, you might have a chance."

"What instructions? I'll do anything!"

"Listen carefully. Tomorrow is Christmas Eve. From 11:30 PM to 2:00 AM, your entire family needs to be in the living room, in sleeping bags, under the Christmas tree."

"And then what?"

"This is the most important rule," he said, his voice turning serious. "You have to be perfect sleepers. You can't actually fall asleep—absolutely not, or you'll die in your sleep. But no matter what you hear, what you smell, or even if you feel something touch you, you absolutely cannot open your eyes or break character."

My voice trembled. "Something will… touch us?"

"It will test you," he said. "To see if you're really asleep." He paused. "Once it hits 2:00 AM, it will leave. Remember, 2:00 AM sharp."

"What happens if we mess up?"

"Do you really want to know?"

I swallowed hard. "Yes."

"Search for the 'Millbrook Family Christmas Massacre,' the 'Vermont Christmas Eve Slayings,' and the 'Connecticut Santa Claus Killer.' You'll understand."

After the call, I immediately searched for those keywords.

The first result made my breath catch in my throat.

Millbrook Family of Four Found Dead on Christmas, Scene a 'Slaughterhouse'

The news photo was blurry but horrifying enough: a blood-spattered living room, the Christmas tree toppled over, its lights still blinking. Four bodies were twisted into unnatural positions, their faces frozen in expressions of extreme pain and terror.

Vermont Family of Five Dies Mysteriously on Christmas Eve, Cause of Death Unknown

This family died in their living room, arranged in a circle. All of their eyes had been gouged out and the sockets stuffed with fine, black powder.

Connecticut 'Santa Claus Killer' Strikes Again, Victims Include Two Children

The photos for this one were even more disturbing.

The victims' limbs were bent at impossible angles, as if they had been snapped by some immense force.

Every case took place in a single-family home with a fireplace and chimney.

Every case happened on Christmas Eve.

Every case had no signs of forced entry.

And at every single crime scene, they found the same thing: scattered black powder under the Christmas tree.

I felt sick.

At dinner, I knew I had to tell my parents.

"Dad, Mom, I need to talk to you," I said, putting down my fork. "It's about Sophie."

I told them everything—my online discovery, NocturneNotes' instructions, the news reports.

Dad frowned when I finished. "Chloe, you're an engineering student. You should believe in science. These internet horror stories aren't good for you."

"Dad, I can show you the news reports—"

"You can fake anything online." Dad stood up, walked to the storage closet, and pulled out a shotgun. "If there really is an intruder, this will take care of it."

He checked the chamber, made sure it was loaded, then activated our smart home security system.

"Full-coverage cameras, motion sensors, window and door alarms," he said proudly. "Not even a fly can get in. This is a lot more reliable than your internet friend's advice."

"Dad, please!" I begged, tears streaming down my face. "It's just one night! If I'm wrong, you can punish me however you want! But if I'm right…"

I turned my phone screen towards them, showing them the pictures of the bodies.

Mom glanced at it, her hand flying to her mouth, her face pale.

"Oh, God, those pictures…"

Dad looked at my ashen face and sighed. "Fine. But I'm keeping the gun with me, and the security system stays on."

Last was Sophie.

I suddenly had an idea.

"Sophie, do you want that biggest present under the tree? The LEGO castle?"

Sophie's eyes lit up. "Really? Can I open it now?"

"You can, but you have to play a special Christmas game with us," I said, crouching down to look her in the eye. "Tomorrow night, we're all going to play 'Sleeping Statues' in the living room. From 11:30 to 2:00, we all have to lie down by the tree and pretend to be asleep. No matter what happens, no matter what noises you hear, you can't open your eyes or talk. Can you do that?"

Sophie nodded excitedly. "I'm the best at pretending to sleep! I do it all the time when Mom checks on me!"

"Good girl," I said, stroking her hair. "Remember, no matter what, don't open your eyes. That's the most important rule of the game."

Now, everything depended on tomorrow night.