I Know What You Did Last Christmas (2025) Movie Script

(wind blowing) (fire roaring)
(wind blowing)
(eerie music)
(footsteps trudging)
(eerie music) (bag dragging)
(Cassie gasping)
(eerie music)
(cloth tearing)
(knife slicing)
(eerie music)
(Cassie gasping)
(intense music)
(holiday music) (car rumbling)
(holiday music)
(holiday music continues)
(shifter shifting)
(holiday music) (phone chiming)
(keys clinking)
(door clicking) (birds calling)
(footsteps trudging) (birds calling)
Hello?
(door slamming)
(footsteps clicking)
Hello?
(footsteps clicking)
Hello?
Hello?
(footsteps clicking)
Hello?
(footsteps clicking)
Hello?
(door slamming)
(eerie music) (footsteps clicking)
Shit.
(Cassie gasping)
- Oh my God.
- Oh, Jesus Christ, Cassie.
You scared the hell outta me.
Amber?
Merry Christmas.
I got your invite.
Not me.
Weird.
You're the first person here.
Mm. Yes. Hence why I
needed something stiff, right?
Well, the oven's on.
What?
The oven.
That's weird.
(pan scraping)
(alcohol pouring)
(footsteps clicking)
There's no dust.
Sorry?
This place is spotless.
Weird.
I think I'm just gonna go home.
Cass.
Okay, Cass, make up your mind.
Are we leaving or are we staying?
'Cause if we're staying,
I'm gonna move my car.
You can do what you
want. Amber, I'm leaving.
(footsteps trudging)
Hey, Cassie.
(dramatic music)
- Nico.
(dramatic music) (birds calling)
What do you think?
- Me? I dunno.
- Why did you even come here?
Why did you come here?
Shit, I know why I came. I was scared.
You know, I had my dad
write a blank check, just in case.
- Just in case what?
- I don't know.
Someone trying to fuck with us.
What do you think someone
might be blackmailing us?
Well, that would suggest
that we did something wrong.
Amber.
(horn honking)
You know who that is.
(footsteps clicking)
(dramatic music)
It's good to see you, Cass.
(dramatic music)
You are welcome.
Trey the Tank is back, baby. Woo!
Who's playing with us? Huh? Huh?
Hey, I'm back.
Hi, beautiful.
[Trey] What's up, ese?
[Nico] What right I am, what right I am.
And cheer.
Looking good, bro.
Looking good.
You're looking the same.
Right, I am.
Hey, Cassie.
Erin.
Are you kidding me?
No signal.
[Cassie] I know.
Not even WiFi.
I know it's tragic.
Believe me. Tell you what, dog.
I'm hitting that.
Damn, cool.
That's, it's cool, Trey.
Yeah, it is.
So you guys got the invites too?
It's a bit weird, don't you think?
Yeah, strange.
Some fucker thinks he's
doing something wrong.
(Trey laughing)
Wait till they get here. I'll
show 'em what they did wrong.
(Trey laughing)
(footsteps trudging) (birds calling)
(water flowing)
Cassie, Amber, Erin, and Trey.
In case you were wondering.
I wasn't.
(footsteps trudging)
It's good to see you, Dax.
No, it isn't.
(dramatic music)
(birds calling)
(dramatic music)
Is that everyone?
No, not yet.
You want a drink?
I'll just get it.
Hey sis, gimme a beer, yeah?
Okay.
(dramatic music)
So this is everyone then, yeah?
Yeah, thanks. I got it, you know?
Hey, Dax. How you doing?
Hmm? There she is.
Hey, Trey.
- Still sober?
- Yeah. Seven months now.
Oh, look at you, so
strong-willed. I'm impressed.
Yeah.
[Trey] Hey, said that
was everyone, right?
Yeah.
[Trey] Huh.
(birds calling)
(footsteps trudging)
(footsteps clicking)
Who the fuck are you?
Sam.
This random got an invite, too.
I'm Sam. I dunno if you guys remember.
Yeah, I remember you.
Weirdos remember weirdos.
[Nico] You got an invite, really?
Yeah.
The fuck is this guy?
I don't remember it, man.
No.
He was there.
That's all of us then.
(dramatic music) (clock ticking)
So are we even gonna
talk about why we're all here?
(balls clicking)
Exactly, Ashley's sis. You're right.
So one of you set this up, huh?
Some sharing or remembering shit.
Maybe blackmail, huh?
Which is bullshit, by the way.
Why is that bullshit?
Why? Because we did nothing wrong.
It's all just some shitty bad luck for him.
[Nico] Cassie!
Oh, trouble in Paradise, huh?
(dramatic music)
Cassie. Cassie, it's been a year.
You're not replying to my calls, my texts.
You can't keep running.
You really don't get the hint, do you?
Look what happened, it was the bad luck.
It was just shitty bad luck.
You still telling yourself that?
When are you gonna
stop lying to yourself, Nico?
Baby, baby.
You know that's not true. Okay?
It's me.
It's me and you, yeah?
We're strong, we're unbreakable. Okay?
Hey, remember, forever and always,
always.
Cassie, what are you doing?
I'm casting negative thoughts.
That's all of us.
Wendy.
We have to get the others.
Oh my God. Do you know how much this is?
Prisons? Whoa. The quiet boy speaks.
What even are these?
Millie used to call us that.
They're what we want
for the things we love.
Oh. Oh, that's good.
That's fucking hilarious.
- Eat shit.
- There's one left.
There's only nine of us here.
Yeah, but they're used to be 10.
Cassie.
It's Millie.
What? (Dramatic music)
Millie took that photo?
Jesus Christ.
Guys, we did nothing wrong, all right?
We didn't let her in.
Nico, it was an accident, all right?
It was a fucking accident.
Trey-(eerie music)
(all screaming)
Fuck, fuck.
What are we gonna do now?
- Power's gone out.
- Great.
Absolutely perfect.
Wait, no, it hasn't looked.
The lights are still on.
Maybe a fuse box.
Okay, let's go find some candles.
(eerie music)
(lighter flicking)
(eerie music)
All right, sis.
This is Sam, right?
You want a game?
[Sam] Sure.
Yeah.
Where are you going?
[Erin] Content, duh.
Of course.
(footsteps clicking)
Okay, we really need to get out of here.
[Trey] Well, there she goes again.
[Cassie] And what's
that supposed to mean?
[Trey] Well, none of
us saw or heard from you
ever since it happened, right,
not even your pretty boy boyfriend.
We all arrive here, right?
And who's the first person to show up?
It's you, right?
Hey, lay off Cassie.
I mean, if you're gonna point fingers,
I was the first person here.
Yeah, but you didn't
ghost us, did you, Amber?
[Nico] Trey, that's enough.
Yeah.
Don't be shy.
You know, honestly, just tell us.
Go on, just tell us.
I said, that's enough.
(Trey cackling)
[Trey] Oh, you wanna chase after her?
Fuck you.
(Trey cackling)
Cassie, Cassie.
That's the thing about
Cassie, she loves being chased.
Man, fuck that guy.
It's your game.
You can play.
[Amber] Trey, where are you going?
[Trey] See if I can sort
these chilly lights out,
find the fuse box or whatever.
(pool balls clacking)
Nice.
Damn fuse box.
All right, maybe it's outside.
[Nico] Cassie, what is it?
What's up?
It's my keys.
I don't know where they've gone.
But I, you've obviously
put 'em somewhere.
Yeah, I have.
I put 'em right there.
I don't know where they've.
Chill.
All right, just chill.
We'll find 'em.
Where's Amber?
Amber?
Yeah.
I don't know, one of the bedrooms.
Try the kitchen.
(eerie music)
(water bubbling)
(Trey whistling)
It is a nice place though.
That's weird.
All right.
(water bubbling)
All right, hot tub.
(Trey laughing)
I'm coming in you later.
That's gonna be great.
Get it together, Trey.
Huh.
Huh. (Fire crackling)
Well, that's nice.
(Trey chuckling)
All right.
(air hissing)
What is this?
Trey.
Very funny.
This has to be Amber.
Huh.
(menacing music)
(Trey whimpering)
(menacing music)
(candy cane thudding)
(Trey choking)
Amber, you seen Trey?
He went to fix the fuse box.
Oh, right on cue.
Did you find them?
Find what?
The keys.
[Nico] Oh, nah.
Have you got your keys?
I think they're in the kitchen.
Let me go check.
Cassie, can we talk?
Why?
Please.
Hey, have you seen Lila's car keys?
What?
Lila's lost her keys,
and I don't think Amber
and Cassie have theirs.
They've lost their keys?
Well, what is it?
Well, they've lost their keys.
She lost her keys.
Sounds kind of poetic, doesn't it?
I guess.
What?
Well, if you find them,
let me know, yeah?
Idiot.
(bag rustling)
(toiletries rustling)
(shower spraying)
(door creaking)
(haunting music)
We should have told the truth.
Nico.
You think I don't know?
Cassie, what the fuck
would've happened to our lives
if we told the truth, Cassie?
And what has happened to our lives?
Hmm?
I mean, look at us.
You never graduated from university.
Neither did I, none of us did.
I know.
You think I don't fucking know that?
And what about Millie's life, hmm?
No one ever thinks
about Millie's life, do they?
She didn't get anything.
(haunting music)
We should have told the truth.
And then it was done.
(Trey chuckling) (Millie crying)
Hey, what's up with you?
Ignore her.
Every time, man.
Get out.
Hey, hey.
Got an idea.
- Door.
- Door.
(Trey laughing)
[Trey] Every time with the accent, man.
- Come on.
- [Nico] Door, dude.
(Nico and Trey laughing)
(Millie crying)
(Millie shivering)
You all right?
You look a little cold.
Please, it's freezing.
Let me in.
Nico, come on, look at this.
Look at this.
Guys.
Please.
(lively Christmas music)
(Millie shivering)
(footsteps clicking)
(Nico sniffling)
I've missed you.
I missed you too, Nico, like a lot.
Nico, please.
Just shut up.
I'm sorry.
It's just every time, every
time I close my eyes,
all I can see is her face, and I don't know
how to deal with that.
- I just.
- I know.
I know.
Me too, but Cassie,
it was just a prank.
It was just a prank that went wrong.
It wasn't just a prank.
We didn't mean for this to happen.
Cassie.
(Nico and Cassie crying)
Hey guys, welcome back to my channel.
I'm Erin, and today I'm
gonna be showing you
some home workout routines.
Enjoy the show.
(eerie music)
(eerie music continues)
Trey, is that you?
Sorry about that, guys.
Let's carry on.
(menacing music)
Trey, is that you?
Are you fucking with me?
The time I spend in this gym means
I can fuck up anybody that crosses me.
Sorry about that guys.
Let's do some situps.
(menacing music)
(Erin screaming)
(dumbbell thudding)
(Erin gagging)
(Santa heavy breathing)
(menacing music)
Has anyone seen Trey?
I can't find him.
Fuck Trey.
No.
I've not seen him.
I mean, we can't find our keys.
I can't find my keys.
What if this is a trap?
Yeah.
I'm telling you guys, we
really should probably leave.
Hey, quiet kid, come on.
We'll go find 'em.
What, you scared you're not gonna keep up?
Come on, now.
(knocking on door)
(footsteps clicking)
Why are you sullen?
Trey's gone missing.
I don't normally get good
news delivered to my door, but.
Jules, this is serious.
Oh, I know.
Do you think she died being scared?
Jules.
Or do you think she died hating us?
She lost her fucking car keys.
I know, I know.
I think she died hating us.
I would've.
Enough to do something about it?
What do you mean?
[Amber] Maybe it was you
who sent us those invites.
Amber.
What?
Yeah, I did have a moment of clarity.
You never know.
Relax, I'm coming.
(footsteps clicking)
Erin?
Erin.
(eerie music)
Did you ever graduate in the end?
Yeah, with honors.
Shit, well done.
I am, I couldn't really finish, you know.
My head, you know, conscience and all that.
Yeah, I guess so.
Millie was so smart.
Yeah, I guess she was.
Hey.
Hello?
What is it?
Trey's gone missing.
Yeah, and we think it's
probably safer to go inside.
Like Millie would've been.
Dax.
Just leave it.
Look, have you seen him or not?
No.
Maybe he's gotten lost,
which would be pretty ironic, wouldn't it?
Tell me, Nico, what do you regret more?
What happened, or what
it cost you and Cassie?
You what.
(Lila screaming)
What the fuck was that?
Where did it come from?
I don't know.
(Lila screaming)
Maybe we should go into
a nearby town or something.
What, out there?
I don't know.
Strength in numbers.
[Nico] Yeah, Amber's right.
Maybe we could, like, go outside.
Yeah, well, what would
we say if we got there?
The truth?
Maybe that's a good place to start.
What truth is that, Nico?
Jules.
Serious, golden boy.
University's top students
sent on a getaway to study.
Friends, acquaintances, strangers,
all with something in
common, and a woman dying.
It was a freak accident.
Wasn't there, was it?
It wasn't an accident,
and we are all to blame for this.
Oh, no.
We didn't do anything.
I mean, if anything it was
Trey who said we should do it,
but he was just joking.
Yeah, and denying it won't keep us safe
And running won't either.
Can someone just come
up with a plan, please?
We're sitting ducks right now.
Maybe it's time we all pay
the price of what happened.
And what if that
truth tears us all apart?
Then we face it together.
No more lies.
I just want this to
end, one way or another.
(haunting music)
We killed her, all of us.
We never found Millie's body.
Amber.
I don't know, maybe she
was just presumed dead
or she's out there
somewhere and fucking with us.
I don't know.
Not just out there.
Waiting for us to come back one year later.
(Lila chuckling)
Yeah, and we deserve this.
That's the spirit.
We can't just sit here and wait to die.
Then what?
What are you suggesting, quiet boy?
Well, Amber was right.
We could try and make it to the town.
Could actually.
Me and you?
[Cassie] What, just yous two?
Yes, me and Sam.
No, no, Nico.
You're not doing that.
Splitting up, that's brilliant logic.
Well, we know the route, don't we?
We can, we'll make a dash for it.
Sure you can keep up?
I'll try.
What if something happens to you two?
We sit here and wait
for a miracle to happen?
Come on guys, it's not a plan.
Well, it's the best chance we've got.
You're right.
We have to be ready to act.
We can't just sit here and do nothing.
(footsteps trudging)
Hey, quiet kid, I told you to keep up.
What's that over there?
(footsteps trudging)
(menacing music)
How can you do that right now?
Helps me manage the pain.
Pain?
Lila.
I can't do it anymore.
I can't, I can't.
Oh, Lila, please.
Let her go.
She isn't gonna leave the building.
Lila's too scared.
To hell with this.
Where are you going?
One of the other rooms away from this.
I want to know,
do you ever feel guilty about it, Amber?
Honestly, no, not really.
You should, don't you think?
Have another drink, Jules.
What are you doing?
Nothing.
Nothing at all.
(haunting music)
(Lila screaming)
Let me go, Nico. Nico,
there's something there.
Relax.
- Lila, Lila.
- Let me go.
Look, I found the killer.
Lila, Lila.
Lila, Lila.
I'm trying to get-
Look.
Lila.
It's over.
Lila, don't go.
Lila!
(Lila screaming)
(water splashing)
(Lila screaming)
(haunting music)
(phone chiming)
[Phone Message] I know what you did.
(phone message cackling)
(phone chiming)
[Killer] I'm gonna get you.
(killer laughing)
(Dax groaning)
They're gone.
What?
Yeah, like out of the building gone.
Where are the other two?
Well, they left.
What do you mean, they left?
I don't know.
I tried to stop them, but they left,
and then Jules was
acting really, really weird,
and I don't know, I don't know.
Okay, okay, okay.
We can't just let them go by themselves.
Something's really not right here.
Okay, let's go.
Okay, come.
Lila, Dax.
Guys?
(eerie music)
[Cassie] Dax?
Where are they?
(eerie music)
Dax?
(eerie music)
(Dax pounding)
Dax?
(eerie music)
Dax?
(Dax pounding)
Dax, come on, what you doing?
(eerie music)
(wind whooshing)
(Dax pounding)
Dax?
(Dax pounding)
(eerie music)
Dax?
(eerie music)
(door clicking)
(gears ratcheting)
(door clicking)
(eerie music)
(mirror pounding)
(haunting music)
(cabinet door creaking)
(mirror pounding)
What are you doing here?
Looking for you.
Looking for me, why?
Where have you been, huh?
We've been looking all over for you.
Taking some time alone to think.
Yeah, well, don't do that, not right now.
Why are you flinching?
I'm not.
Yes you are.
You're scared of me.
Well, maybe I don't know
who I can trust anymore.
Trust me, Amber.
Sometimes fear can be your only friend.
(footsteps clicking)
(haunting music)
Dax?
(Cassie shuddering)
(eerie music)
(Cassie heavy breathing)
(footsteps clicking)
Cassie!
No, fuck, you stay the fuck away from me.
I don't fucking trust you.
(Amber screaming)
Lila?
Lila?
(footsteps clicking)
Lila?
Lila?
Lila?
(door clicking)
Lila?
(haunting music)
(Cassie whimpering)
(intense music) (Jules crying)
(tense music)
(Cassie crying)
Nico?
What happened to you?
God, Cassie.
Cassie, run.
No, no, no, no, I'm not leaving you.
I'm not gonna leave you.
Cassie, it's not safe.
You need to get out.
I'm not going to.
- No, no.
- Go, Cassie.
(Cassie whimpering)
Just go.
(Nico sighing)
I got him, I got the crooked bastard.
Jules, Jules.
I thought he got you.
Yeah, I thought he would've got you too.
(knife thudding)
My God.
Why?
Never trust man to do a woman's job.
Jules, Jules.
Hey, hey.
(Jules crying)
Amber?
Help me!
Amber!
Merry Christmas, Cassie.
(knife butt thudding)
God rest ye merry gentlemen
Get rid of her.
Let nothing you dismay
Remember Christ
our savior (Nico groaning)
Was born on Christmas Day
To save us all from Satan's power
When we were gone astray
O tidings of comfort and joy
O tidings of comfort and joy
(chair rattling)
Good morning, gorgeous.
What is this?
Poetic justice.
Sam and I are here to tie
this all up in a nice little bow.
Since when were you two innocent, huh?
You were both there.
[Sam] No, we weren't.
Yes, you were.
You were both there.
Oh, no, you know we were not involved.
You still lied to the police, Amber.
Your hands are hardly clean, Lady Macbeth.
Oh, fuck you,
don't you think I know that?
So why?
Why did you do it?
Why'd you go along with it?
Here's the thing.
Sam and I were playing the long game.
We would've went to the cops a year ago,
your mommy and daddy's
lawyers would've got you off
with a slap on the wrist
and maybe if we were lucky,
some like, community service.
Quiet kid, is that what
you think as well, is it?
Me?
Never liked you fuckers anyways.
What about you, hmm?
You are my best friend.
You wanna talk about
being a best friend, Cass?
I have not heard from you a
single time since any of this.
Shut up, Amber.
You don't think we lost someone too?
You don't think I fucking
hurt every day because of it.
I loved her.
You did not love her.
I loved her.
[Cassie] We all fucking loved her.
No, I was in fucking love with her,
you stupid fucking bitch.
What?
(Amber sniffling)
That night,
(Amber sniffling) Millie
told me she loved me,
and I just stood there,
paralyzed, so scared.
So she ran downstairs.
Sam ran into my room,
and so it was my fault
that she went downstairs,
and it was my fault
that she got in trouble,
but it's not my fault
that she is fucking dead.
You killed her.
You fucking killed her.
I couldn't save her,
but I can make sure
she doesn't die in vain.
Amber, it's not too late.
We can go to the police.
We can, we will confess.
We'll tell 'em exactly what happened.
- Amber, please.
- Nico.
Mr. Quarterback.
[Cassie] Amber.
Cassie didn't speak to
you for three years, did she?
Amber, please.
How did that make you feel?
Break your little heart?
You miss her?
Obviously.
Well, now imagine that
- she's fucking dead.
- Hey, hey, hey!
You put that knife away!
That is my every fucking day now.
Amber, we didn't know what to do.
Oh, you didn't?
Shut the fuck up.
We didn't know what we was doing.
Shut the fuck up, Cassie.
Do you not think I'm so fucking sick
of hearing all your stupid ass excuses?
Why did you do it?
Why did you leave her
out there in the snow?
For a big laugh?
For him, for Nico?
It was for us, it was for us.
It was for us, it was for.
It wasn't.
I'm sorry.
You did it to save yourself.
I'm sorry.
You are the most selfish fucking person
I have ever fucking met, and I hope
you fucking die knowing that.
I'm sorry.
[Amber] You're sorry?
I'm sorry.
[Amber] You're sorry?
Say it again.
Stop saying sorry!
Your sorry isn't gonna
bring her back, Cassie.
So how about fuck you and fuck Millie.
(tense music)
You keep Millie's name
out of your fucking mouth.
(Nico laughing)
Millie, Millie, Millie, Millie.
Let's talk about Millie.
Nico, will you just shut
up about her, please?
No, no, no, no, no.
Let's talk about what
a fucking slut she was.
The only person that she
ever cared about left her to die,
- didn't she?
- [Amber] Fuck you!
Shut the fuck up.
- Shut the fuck up!
- [Nico] It was you!
It was you.
(Nico laughing)
Hey, hey, Amber.
Now I think about it,
maybe I didn't kill her.
Maybe it was you.
You killed her.
You did it, Amber, you!
(blood spurting)
You know, I know exactly
what you're feeling right now.
The grief, the guilt,
the blood lust, the rage
all twisted into one.
What happened to you?
You all fucking happened to me.
You know the guilt I
felt after Millie died,
I thought it was an
all-consuming feeling for revenge.
Revenge tastes fucking sweet.
Yeah, I think I might agree with you.
(Amber groaning)
Don't you keep fucking with me.
(Amber coughing)
(Sam groaning)
(intense music)
(Cassie heavy breathing)
(intense music)
(Cassie screaming)
(water bubbling)
(boxes clattering)
(intense music)
(Cassie heavy breathing)
(tense music)
(Sam screaming) (Cassie screaming)
(pool cue thudding)
(Cassie heavy breathing)
(Cassie whimpering)
(Cassie crying)
That's touching.
(Cassie crying)
(Amber whimpering)
(water bubbling) (Cassie crying)
(menacing music)
(Amber crying)
(Cassie screaming)
(intense music)
(Cassie whimpering)
(water bubbling)
(Cassie whimpering)
(tender Christmas music)
(tender Christmas music continues)
(lively Christmas music)
(lively Christmas music continues)
(jellyfish bubbling)