Doctor Who (2005–…): Season 10, Episode 4 - Knock Knock - full transcript

Bill is moving in with some friends and they've found the perfect house rented by the landlord. The wind blows, the floorboards creak and the Doctor thinks something is very wrong.

Weird People by Little Mix.

So... Felicity... Hi.
Harry, Pavel... Hi. Paul.

Everyone, this is Bill,
your new housemate. Be nice!

Six bedrooms?

I've got audio equipment.
So some extra space would be good.

I'd quite like underfloor heating.

This is bedroom five...
It hasn't got a door...?

And bedroom six is through there.

As you can see,

this offers more space.

What do other people do?



Other people have money.

Forgive me, but are you looking
for somewhere to live?

Wow!

Mate, check out the tower.

I'm afraid the tower is unsafe.

Bill, look at it!

Yeah, but why's it so cheap?

This place is great!

The rooms are huge!

Can I move in tonight?
My halls are kicking me out.

Yes. Yes, of course.

So, you'll sign the contract?

Yes! Of course.

Bill?



Sonata No.1 in G Minor
by Itzhak Perlman.

What?

No, no! No, no!

Stop!

Stop!

Three...

two...

one...

That's all you've got?

I thought you'd have loads.
Thanks for helping, yeah?

You should hire this out.

Like a removal service...

Removals? Bill, I'm a Time Lord...

"Time Lord"? What's that? Your job?
No!

It's, er, my people, my species.

Doesn't sound like a species.

Sounds posh, like, "Yes, my lord!"
Doff my cap.

Well, that's why I gave it up.
Ran away.

"Time Lords" That's hilarious!

Do you wear robes and big hats?
No, big collars mostly.

Do you want the postcode? Sorry?
To find the house?

Bill, the tardis
uses multi-dimensional

space-time coordinates.

So, you know where it is?

OK, right, put the postcode in here.

Saw the bedroom. Do you sleep here?

If I need to.

Done? Yeah.

"If I need to"? What does that mean?

Sleep's for tortoises.

Not "Time Lords"? No!

Unless we've regenerated
or had a big lunch. "Regenerated"?

The questions, the questions,
the questions...!

Just remember "Time Lords".
That's enough for now.

Here we are!

I'll use the tardis.
Take it all to your room.

Firstly, I don't know
which one my room is,

and, secondly, that's weird and
I want to make a good impression.

It's cool, I'll just, um...

get everything out of the tardis
and then you can go.

Thanks for the lift, though!

Bye!

That's your house?

Sharing. Yeah. Six of us.

Renting.

I thought you were students?

Yeah, I was like,
"What's the catch?"

but, actually, it's fine,
just a bit draughty.

"Draughty"?

I meant draughty inside.

Interesting. I'll help you in.

No, no, no - it's fine!
You really don't have to!

Really not a problem! No! Wait!
Honestly, um... if you just...

If you just go
and do history or whatever...

Hey! Where have you been?
I thought...

You're the Doctor.

Yes, hi, can I get past?
He's just helping with the move.

Helping? He's just my...
Friend... grandad.

Wait, I don't look old enough to...

to hold that box for very long.

Yeah!

How exciting is this?!

Wow!

Doctor! Legend!

He's my grandad.

Aw! Come on!

Father, at least. Please!

All right, grandfather.

You really can go now, though.

Thanks for the help. Job done!

OK.

Bye.

Bye.

He's your grandad? That's awesome!

Mine went greypacking on the Great
Wall Of China with his boyfriend,

but they got arrested
for trying to steal a bit.

Bit of what? The wall.

OK...!

You want a hand? Yeah.

Thanks.

I keep thinking there's going
to be one of those bookcases

that you pull special books
and it's a secret passage!

Yeah. Spooky!

Met Pavel on my first day.

Often does this.

Sits in his room for days.
Says it gets him in the zone.

All these lot are empty.

Yeah, this is nice.

I picked my room
before I'd even seen up here.

I thought you wanted the tower?

Yeah, I wish. Can't find a way in.

There's a freshers' party
in the park tonight.

This lot aren't interested,
but it could be fun.

Or not! But either way, I was saying
we should throw our own party.

You know, pop-up!

Freestyle! Boom!

Yeah, sounds good.

See you later, then. Sure.

Here you go, Mum. My own place.

You proud?

Thanks!

Rrrrrrrr!

Stop it.

There's no living puddles or...

weird robots, big fish,

just a new house,

and people you don't know.

Not scary at all.

I just get nervous
when there's no reception.

Like something bad's going
to happen. Have to get a landline.

"Landline"! What is this? Scotland?

Actually, I was unpacking just
now and heard this... tapping,

little footsteps,
like, in the room above? What?!

Oo-oo-oo-ooh!

Maybe it's a little doll
that's come to life.

Or a massive, freaky spider.

Probably just a mouse. Yeah,
we know! Just messing with her.

"Mice"? If there's mice,
I'm leaving.

What's that?! Pavel?
Pavel's upstairs.

Paul, go and have a look. Why me?
You're physically the biggest.

And the most expendable.

It's in the kitchen.

It's all right. I'll go.

Maybe it's just the central heating?

There isn't any. I thought...

He'd gone home! Me, too!

Isn't any what?

Central heating.

I've been looking around.
Inside and out.

Very interesting. Lots of wood.

Why are you still here?

Do you know what that is?

That's an oil-burning heater.

You might need it.

There's no washing machine either.
The hob is from the '30s.

Thanks very much. The power sockets
will not take your devices.

I thought it was just my room.
No, no, no. They're out of date.

What's that... smell?

Is that Chinese food?
I love Chinese! Doctor...!

There might be a few old things,
but it just needs updating.

It's not like there's some massive
mystery going on.

Did you hear the trees creaking
outside when we arrived?

Yeah. It was the wind.

There wasn't any wind.

You should find another house.

I don't think so.

The rooms are really big.

Exactly, it's still the best
place for the money.

I'll just call the landlord, sort it
out. You can't. No reception.

OK, so I'll go down the hill...

Hi.

Didn't hear you come in.

For a man such as myself,
discretion is second nature.

So, a gathering. You're all here...
No, except one.

- Pavel's upstairs.
- And one in addition.

He's the Doctor. Doctor...?

Yeah, he's my... grandfather.

You're assisting with the
relocation? That's right, yeah.

It's a heartbreaking experience,
to leave one's charge behind.

All alone in the big, wide world.

Indeed. Yes.

You got children? I...

Yes, a daughter.

But I'm most fortunate.
She's still under my protection.

So long as that's the case,
I'm most content.

So, I was calling to see
if everything was satisfactory?

Actually, there are a few things...

Yes, I see. Go on.
No central heating?

The power sockets are wrong.
A landline. Some new furniture.

There's no mobile reception.
And some curtains. Carpets?

Have you got a cat?

A cat?

Yeah, um, Harry said that he heard
some noise upstairs,

like walking around?

No cats.

No pets.

You understand I won't be able to
do any of this tonight?

But as soon as possible.
Yes. Knock on wood.

Do what I can.

That's another thing,
the house is really creaky.

Everything you touch, it's like,
"Eeeeuuuurrr!"

It's unavoidable, my dear.

How do you get into the tower?
You don't!

The tower is specifically excluded
from the terms of our agreement.

Right, well...

Thank you. No tower. Got it.

Right.

Are you staying here tonight? Yes.

No, he's not. I'm not sure.
There's no reason to.

I probably will.
There isn't a bed, so...

All right.

Sorry, excuse me.
Sorry, sorry, sorry...

Who, um...

Who's the Prime Minister?

I beg your pardon?

Margaret Thatcher? Harriet Jones?
Wilson? Eden?

I think it's better to leave
your granddaughter with her friends.

They seem respectable,
and I'll keep an eye, of course.

I'll attend to your
requirements in the morning.

In the meantime, sleep well.

I take it back. You're fine.

HE'S weird.

The washing machine!

That's weird.

He's not there.

That's it!

That's the noise I heard.

Fascinating...

It's just pipes. I'm going to bed.

Yeah. Might go up, as well.
Me, too - locking my door though!

Grandfather?

Hello! Yeah.

Perhaps you should leave now?

No, I'm fine. Or at least then, go
and sleep outside in... the car?

Are you two tired? Well...

Good! No, I'm going to hang about
with Simon. Harry.

And Florence. Felicity. Yeah, why?
Well, we're going to chill. Yeah?

Yeah, OK. Yes. Put some tunes on.
Yes? Yes! All right.

See? I'm good at making friends.
Give me your phone.

But why? There's no reception.
Phone.

Black Magic by Little Mix

I LOVE this.
Do you know who this is?

Do I know who this is?
Yes, I know who this is...

Yeah, it's Spotify so it's probably
random. "Little... Mix".

You like Little Mix?
Clearly she does.

Look! There's a whole playlist here.
What else have you got on it?

Can I have a word, please?

Honestly, Doctor,
there's nothing going on.

Nothing weird, nothing alien.

Just an old house
and a dodgy landlord,

which is pretty standard
for students.

I'll see you later for more exciting
tardis action,

but, basically, this is the bit
of my life that you're not in.

You know what I mean?

I know what you mean.

Thanks.

So, up the wooden hill you go.

Sleep well. OK...

Maybe before you do, you should
check on your friend,

who hasn't been seen for a day
and who has strange music

coming out of his room.
They said he just does that.

Nobody "just does" anything.

You're not leaving, are you? No.

Your friend will probably be fine.

Knock on wood.

We need to have a talk about your
taste in music. You coming up?

Yeah.

This freaky Scooby-Doo house!

Bill, if you get scared in the
night, you know where I am, yeah?

What? Just, if you need any...
of my help,

or my whatever, you know?

Yeah, um...

I get that you're into me,

but, um, sorry, you're not my type.

It's just, I tend to go for girls,
usually, so...

Right!

I was never in
with a chance. Awesome!

Jeez! Stop!

This is what I'm talking about.

This stuff really freaks
you out, doesn't it? No.

It's just annoying! Go to bed!
Sure.

See you in the morning... Agh!

Night, then!

Why didn't you get a room
next to me, like we said?

What? I don't know.
Doesn't mean anything.

I'm not cool enough, is that it?
No. Shut up!

These are my mates, too.

Paul! Not funny!

Do you fancy him?

No! Who? Paul? Why? No.

Hey! It's not funny!

Paul?!

Are you ok?

Mate, come on. We got the joke.

See? He's fine! ok!

See you in the morning.

What?

Er, what's going on?

Paul?

We should get the Doctor.
Why, what's he going to do? Lecture?

Just a normal day,
just a normal day...

Up!

Do you like this music, Doctor?
Reminds me of Quincy Jones.

I stepped in for him once.

The bassist he'd hired turned out
to be a Klarj Neon Death Voc-Bot.

What was worse, he couldn't play.
This is very interesting.

The door? Because it isn't.
Isn't...?

A door. Any more.

Try to open it.

Come on.
Shireen did it a minute ago.

So, it's locked. No. Look.

It's completely sealed.

I don't understand...

The shutters. What about them?

Closed by themselves.

Sealed. So... we're trapped!

Maybe that's the idea.

What do you mean?

What's that?

No, no, no! There's something in
here. I can't be trapped!

I can't! Wait!

Don't go out there!
I can't be trapped!

Agh!

Great.

Now, we're stuck here.

Why did you try and stop her?!
Listen!

Police... Call the police... Call...

What happened to her?

What's going on?

Do you think it's like she said?
A thing?

Maybe.

And so, is it out there now?
Or in here? Or both?

I'm scared. Don't be.

Why not? It doesn't help.

Who's there?

Agh! God!

Pavel?

Pavel?

Do you think he can hear us?

It'll be ok.

Is this what happened to Paul?

Do we call an ambulance?
No reception.

Shireen, please,
sort the record out.

No! Wait, wait, wait!

Is it something
to do with the music?

Did someone do this to you?

I have no desire to intrude,
but I felt there was a problem...

How did you get up here?
It's sealed shut!

Music can be pleasant,
but a simple repetition like that...

it's merely a distraction
from the inevitable.

Hope is its own form of cruelty.

Pavel! No, wait! Put it back!

Look!

He's released.

Mercy at last.

Beautiful, isn't it?

Nature contained.

He's preserved in the walls, in the
very fabric of the building forever.

So, the house is... eating people?

We must all pay our dues.
But not you?

Correct.

I am the exception.

For I am your landlord.

You came here,
you signed the contract.

And now...

It's time to pay.

Go.

What's that noise?!

That tower! It was at the back of
the building.

Logically, the door should be
at the end of this corridor.

Look for a way in!

Indiana Jones... Come on!

Yes! The tower!

What if something's got
into the wood?

Into the lathes, behind the plaster,

into the very fabric of the house?

Wood nymphs,

tree spirits...

dryads.

Anything's possible.

Doctor, what are you doing?

We need to get out and call
the police!

Who's there?

Doctor, you're provoking it.

It's getting louder! Wake up!
Wake up! Out you come!

I was expecting
something quite different.

A gaseous creature. Or microscopic!

Did you see it move
through the wood?

Interacting at a cellular level.
This must be alien! Got to be alien!

What are you doing here?
On your holidays?

Harry - get a matchbox.
A matchbox?!

All right, a shoe box, don't let it
get away! What do you mean "alien"?

Little one!

Doctor...

It can move fast!

Where's that box?

Doctor! What?!

Now, this starts to make sense.

Yes. Dryads indeed.

We need to get out.

We can't!

Harry, in here!

What's the point of hiding in
a cupboard? It's not a cupboard!

What are they?

Look like insects but you're saying
they can shut doors, trap us?

They're not just in the wood,

they're becoming the wood itself.

Total infestation.

Infestation of the Dryads!

You're talking like you've seen
things like this before.

No, actually.
You said they were "alien"?

Well, they could be native
to this planet,

but I've never seen them before.
Have you?

That's what they're called? Dryads?
That's what I'm calling them, yes.

You've gone crazy. Well, I can't
just call them "lice", can I?

Father?

Is that you?

Maybe it belonged to
a family that used to live here?

Harry, there's six boxes.

Tenancy agreement. Same as ours.

Six signatures.

"Jake Christie, Annie Wren,
Jonathan Frost..."

What's the date?

Um, 1997.

"Sarah Tiller, Mark Hopethorne,
Carl Richards."

They move in...

relax...

go to their rooms...

then panic.

Infestation.

Doctor!

1977.

1957. Every 20 years...

There's something coming!

Good.

Christie, Wren, Frost,
Tiller, Hopethorne, Richards.

Fine young men and women.

As were all the others.

Where are they?

In the house.

What? Where?
We haven't seen them.

He means they're IN the house.

The wood, Harry.

Don't think I haven't considered the
consequences, Doctor. So, why do it?

My daughter was dying.

What are you talking about?

Nothing could be done...

until these creatures saved her.

We'd do anything to protect them.

Your daughter, she's here,
she's in the house, isn't she?

Indeed, and she MUST survive.

We have to get out!

Harry, stay with me!

Come back, Harry! Come back!

Aaah! Doctor!

Get him out.

God rest his soul.

Bill! Is Bill all right?

I'd be more concerned
for yourself, Doctor.

Your advanced age means you have
less energy, less... matter,

but they'll take what they can get.

The insects are keeping your
daughter alive. How does that work?

Come on, call these off!

Maybe I could help? I'm a doctor!

Are you ok?

I haven't had visitors
in such a long time.

My name is Eliza.

I'm Bill. This is Shireen.

Hey!

I'm pleased to meet you.

What?

You've got something... just...

just there.

I'm a celebrity,
get me out of here, yeah?

Bill...

Cockroaches. Had them on my
gap year in Morocco.

No problem! Let's go.

Shireen.

No! No!

It's in my foot!

Shireen!

I... I don't understand... she's...

It's upsetting, I understand.

But Father says we have
to survive...

Eliza, do not fear this man,

he says he might be able
to make you well.

Bill, how are you?

Yeah, yeah, I'm ok. Shireen...

The lice? Yeah.

Harry, too. Um, in brief -
he's her dad.

He's been keeping her alive with
the bugs for about 70 years.

Your friends are the food.
I said that I could... help.

Now, you must be Eliza.
How are you feeling? Rotten?

I am quite well.

Administer your treatment, Doctor.
What's the medical history here?

What happened?
Eliza, you were very ill? Yes. Yes?

The doctors had, um,
given up on you,

but then, one day,
your father brings you a present...

Where did you find them?
On the roof? In the garden?

'You find the insects.
You bring them into the house

'because you want
to show them to her.

'Presumably, just to...
just to amuse her.'

You couldn't have known what they
were... Can you help her or not?

I am helping! This is me helping!

How did you find out
their unique abilities?

Did you bring them in here?

You brought them in here, right,
but what activated them?

You use a tuning fork now, but...
Pavel had that record on, a violin?

High-pitched sounds. Yes.

Soothes her to sleep.

'High-pitched sound.

'You leave your daughter alone
for the night, or so you believe.

'The music wakes them. They set
to work, and in the morning, '

you find her revitalised,

just... slightly wooden.

You realise there's a way she can
survive... Enough!

No, wait, Doctor -
that doesn't make sense.

Can you not interrupt?
I'm doing my thing here.

But why would he pick up
insects from the garden

and bring them in to see his ill
daughter? Everyone loves insects.

I don't! They're fascinating!

ok.

Secondly, he's not wood.

He's just like us.

He's...

Yes...

So, if he's her father, and she was
preserved 70 years ago...

You...!

No flies on you, Bill.

And no bugs in you.

I do not understand.

I forget, you see,
your human lifespan -

it's not long, is it?

Do not let them trouble you...

What do you remember of
the past, Eliza?

My... father...

He knows what's best.

Yes, the lice preserve
the appearance and the voice,

but not so much the memories.

He's not your father. Am I right?
No! Stop talking!

Father, what's the matter?

I don't understand...

Your father would've had better
things to do

than playing with insects
in the garden.

But he isn't your father.

When you were ill, he was sent out
of the house, by the doctors

who are failing
to save his mother!

His... mother...?

'Eliza, he's your son.

'Your loving son.'

My son?!

Forgive me...

Forgive me.

'When you saw what the creatures
had done,

'you understood, didn't you?

'The lice could keep
your mother alive,

'if you protected them,

'tamed them, fed them.'

If you could save the one

who brought you into this world -
wouldn't you?!

Your silence is a confirmation.

I did what you told me
because I thought you knew best.

But I...

I am your mother? Yes...

And you...

All these children you've taken!

You told me it was necessary!

That we had no choice.
That's right, it was.

It meant we could stay together.
Don't you understand? We were happy!

I kept our lives a secret.

And a secret we must remain.

You have brought her nothing
but misery and confusion!

You will be taken, like the others!

ok, now's the time for the plan.

That was it, no plan. Info dump,
then busk. Well, start busking!

Eliza, people have died
and will continue to die

unless you stop all this
right now. How can I stop it?!

You're the parent.

You're in charge!

That's it!

Do what I say!

I control you!

No.

It's me.

I control them.

Eliza, finish them now,
take them, or you'll die!

They'll destroy you!

What's the point in surviving
if you never see anyone,

if you hide yourself away
from the world?

When did you last open the shutters?

The freshers' party in the park.

Exactly. New friends.

Fireworks!
That's what life should be!

I remember...

My son...

Leave my side at last.

Go and see the world.

No! I don't want to!

If you won't finish them...

I will! John!

My little boy, this has to end.

No! We mustn't end!

We have to destroy them!

It's our time.

No, I don't want to!

No, no...

Thank you.

We've got to get out of here.

Is that...?

Yes, your friend.
She's restoring them!

I thought you were gone.
Are you ok?

Me?! Yeah, I'm fine.

What about the others? Come on!

We need to get out! Now!

Wrong way! Wrong way! Wrong way!

Bang goes the deposit.

Man! That's our house.

Gone.

Right, you lot,
back to the estate agent!

Better luck next time!

Here he comes! Are you being
cheerful? I'm against cheerful.

Bill told me you went on
a little adventure. You see?

I see what? Well, you don't have to
go to outer space to find monsters.

There's plenty of things that want
to kill you right here on Earth.

Result.

Actually, I'm not that hungry.
Well, I am. Obviously!

ok. You can take the rest
of the night off.

Go on, go do whatever it is you do.

Actually, what do you do?
No! Never tell me that.

I just want to have a look at this.

Our friend inside's been
a little restive lately...

I can sort that out.
No, it's all right, I don't mind...

Goodnight, Nardole.

Right. Goodnight, sir.

See you in the morning.

Fur Elise by Beethoven.

A piano?

You've put a piano in there? Why?

Goodnight.

You don't learn, do you, sir?

Hey!

Do you want dinner?
I've got Mexican.

Look, I know you miss it all.

But I'm stuck here, too, you know?

We're both prisoners.

So, what do you say - dinner?

I've got a new story for you, too.

There's a haunted house
and woodlice from space.

And lots of young people get eaten.

Pop Goes The Weasel

I'm coming in.

'Mining station. Chasm Forge.
Crew of 40.'

Hello?

'Four survivors.

'One distress call.

'They were killed
by their own suits.'

That means there's 36 corpses
walking about this station!

If we want to keep breathing,
we have exactly one option.

None of us have more
than 3,000 breaths left.

Then stop wasting them.