Original subtitles

- Anything, Lieutenant? - No, sir.

l tried every transmitting station. None have acknowledged my contact signal.

Try GSK-783, sub-space frequency 3.

But that's a call sign for a private transmitter.

l'm very well aware of that, Lieutenant. Try it.

- Evaluation, Mr Spock. - As l speculated.

The overall pattern of mass insanity destroying civilisations

follows an almost straight line through this section of the galaxy.

Over here the ancient civilisations.

Archaeologists gave us information indicating they were the beginning.

200 years ago, Levinius V was swept by mass insanity.

Then Theta Cygni Xll. The last was lngraham B two years ago.

And next in line, Deneva. Bones, what's your theory about the cause of all this?

There is no scientific cause for what happened on those planets.

But it follows a pattern, a systematic progression from planet to planet.

Captain, we're picking up a ship on our sensors, heading into the Denevan sun.

- He'll burn up. - Plot an interception course.

Warp factor 8. Lieutenant Uhura, try to contact that ship.

The ship is a one-man vessel of Denevan configuration.

He is not out of control. His course is straight for the sun.

- Scotty, tractor beams? - Out of range, sir.

Making contact, Captain.

Denevan ship, this is the U.S.S. Enterprise.

Can you reverse your course? Acknowledge.

- We'll get too close to the sun. - Keep closing.

Denevan ship, reverse your course.

Do you hear me? Reverse your course. Acknowledge.

Outer hull temperature now 480 degrees and rising.

- He's too close. - So are we.

Hull temperature 1 ,000 degrees and rising. Sun's gravimetric pull increasing.

l did it. lt's finally gone. l'm free.

He burned up, Captain.

- Reverse course. 1 80 degrees about. - Aye, sir.

All clear. Hull temperature falling.

Gravimetric pull approaching tolerance level.

Very well. Reduce to sub-warp speed.

- Take us to Deneva. - Aye, aye, sir.

That Denevan ship headed deliberately into the sun. Why?

There's one possibility. Mass insanity may have reached this planet, too.

l'm having difficulty on that transmitter call to Deneva.

- Keep trying. - Yes, sir.

Jim, your brother Sam and his family, aren't they stationed on this planet?

Space - the final frontier.

These are the voyages of the starship Enterprise.

lts five-year mission, to explore strange new worlds,

to seek out new life and new civilisations,

to boldly go where no man has gone before.

Captain's log, stardate 3287.2.

The mass insanity we have tracked across this section of the galaxy

seems to have already touched Deneva.

The planet, colonised a century ago, is among the most beautiful in the galaxy.

Planet development is normal.

Originally colonised as a freighting-line base in this area.

Their regular trips carry supplies to the asteroid belt

and bring cargo out.

l've made the run a few times as an engineering advisor.

No Federation contacts for over a year.

Captain. l've made contact with your private transmitter.

Put it on audio.

Please hurry. Help us. l don't have much time. They'll know. Please...

Aurelan, this is Jim on the Enterprise. Repeat your message.

- Contact broken, sir. - Re-establish.

- Sorry, sir. - l'm not interested in excuses.

Re-establish contact with that transmitter.

l'm afraid that's impossible, Captain. They stopped broadcasting.

They do not acknowledge my contact signal.

- Keep trying to raise them. - Yes, sir.

Jim, did you know who that woman was?

Yes. You were right a while back.

My brother Sam lives on Deneva. He's a research biologist.

That woman sounded like his wife, Aurelan.

Set your phasers on stun. We're going to beam into the capital city. Alert status.

Mr Spock.

Lt Uhura has had no further response to our signals.

Sensors report the expected number of humans on the planet.

However, they are strangely quiet. Very little activity.

l want a transcript of everything that happens down there. Let's go.

Energise.

There are almost a million inhabitants of Deneva.

There are more than 1 00,000 in this city. Where is everyone?

They're here. ln the buildings. Strangely quiescent.

My brother's lab is over there. They signalled us once.

There should be someone there. Let's find out what's happening.

Captain, several people approaching.

Get away! We don't want to hurt you! Get out of here! Go back!

- Get out of here, please! - Run! Get away!

- Go on! - We don't want to kill you!

Stand by to fire. Fire.

- Did you hear what they said? - They were concerned for our safety.

They tried to brain us with these clubs. Check them out, Bones.

Their attitude was inconsistent with their actions.

- To say the least. - There's something wrong, Jim.

Their nervous systems.

Unconscious, there should be just routine autonomic activity.

But l'm getting a very high reading, as though they're being violently stimulated.

Fan out. Follow me.

Security.

They're here!

Please, keep them away!

- Aurelan... - They're here!

Bones.

Aurelan, you're safe now.

ls this your brother, Jim?

Sam.

lt is my brother. Was my brother.

l'm sorry, Jim.

The boy's unconscious, but he's still alive.

Peter?

l'll get the boy and his mother back to the ship, Jim.

l can't do much for them down here.

Get ready to beam up.

McCoy to Enterprise, prepare to beam up party of four.

- Captain, l understand how... - Yes, Mr Spock.

You heard Aurelan say something about ''they'' being here. Your guess.

Notice the ventilator. They were trying to keep something from getting in.

- But they did not succeed. - lt doesn't make sense.

There are no harmful life forms reported. Our sensors didn't pick anything up.

That is correct. l am at a loss to understand it.

Ready to beam up, Captain.

l'd like you to be on board when your sister-in-law regains consciousness.

Take charge of the landing party, Spock. l want some answers to this all this.

l won't be able to give you the cause until l get the plates from the lab.

They're both in extreme pain. l sedated them heavily.

Your sister-in-law has a high tolerance.

The tranquilliser hasn't affected her much.

- Can she talk? - Yes.

Aurelan? Aurelan, it's Jim.

Jim?

- Sam, he's... - He's dead.

But your son's still alive.

You've got to help us.

You are here.

lt is you, Jim.

Yes, l'm here.

You have to tell us what happened, Aurelan, to you and the others.

- They came...eight months ago. - Who?

Things. Horrible things!

Visitors brought them in their vessel from a planet - lngraham B.

What kind of things?

Not the ship's crew's fault.

The things made them bring their ship here.

Aurelan, it's important that you tell us. What kind of things?

Not their fault.

When she answers questions, it's as if she's fighting to get the answers out.

As though something is exerting pain to stop her.

They use it to control us. They're spreading, Jim.

They need us to be their arms and legs.

They're forcing us to build ships for them.

Don't let them!

Don't let them go any further!

My brother's son...

l'll do everything l can, Jim, to save him.

- Report. - The streets are quiet.

We've seen no other Denevans.

The ones we stunned earlier were gone when we came out.

You've seen some kind of creature? Any alien form?

None, sir. Just that noise we heard.

A peculiar buzzing sound. We were about to investigate it.

All right. Let's go find out what it is. Set your phasers on force 3, to kill.

We're looking for some kind of creature and we already know it will kill.

Spock!

Form a ring.

Fire!

lncredible. Not only should it have been destroyed by our phasers,

it does not register on my tricorder.

Captain, it doesn't even look real.

lt is not life as we know or understand it.

Yet it is obviously alive. lt exists.

And it can bear up under full phaser power.

- l suggest we risk taking it aboard. - lt may be a trap. Let's move out.

Spock. Spock!

lt's gone. Can you stand?

Spock, are you all right?

Captain's log, supplemental.

The creatures have apparently taken over all the inhabitants of Deneva.

Meanwhile, Dr McCoy is examining a strange puncture wound

left by one of the creatures on Mr Spock's back.

Nurse. That's the second time he's come out of it.

Either he's fighting us or something inside of him is fighting us.

Doctor, the readings have never looked like that before, not even on Mr Spock.

Let's prepare to close.

Nurse!

- That's not all you're going to do? - Miss Chapel.

Doctor, there's more of it entwined in him.

lf you cannot assist me as required, call another nurse in here.

But do one or the other now.

How is he?

To be frank, l don't know l can do anything for Spock or your nephew.

Pieces of some form of living tissue.

l removed one from Spock's spinal cord,

the other from your sister-in-law's body. They're the same.

The boy's too weak to touch.

The removal of the tissue wouldn't stop the pain as far as l can tell.

- Did you operate on Spock in time? - No. l removed these for examination.

His body's full of these tentacles, growing about his nervous system.

- My nephew? - The same.

Evidently, when the creature attacks, it leaves a stinger, like a bee or wasp,

leaving one of these in the victim's body.

lt takes over the victim very rapidly.

The entwining is far, far too involved for conventional surgery to remove.

Recommendations?

l'm sorry, Jim. The lab, science departments, we're all stumped.

No.

No!

Mr Spock?

No, l won't.

Mr Spock...

Bridge, this is sickbay. Tell Dr McCoy Mr Spock just left here.

- He's delirious, possibly dangerous. - Security alert.

Locate and restrain Mr Spock. He may be dangerous.

Use phasers on stun if necessary.

l must take the ship.

l must...take it down.

Get him back to the sickbay. Use security restraints.

The K-3 indicator registers the level of pain. Now, watch it as l turn it on.

That's what he's been going through.

l've never seen anything like it. No wonder the poor devils go mad.

Dr McCoy. Captain.

Spock.

These restrains will no longer be necessary.

Nor will your sedatives, Doctor. l'll be able to return to duty.

l apologise for my weakness earlier when l tried to take control of the ship.

l simply did not understand.

What is there to understand, Mr Spock?

l'm a Vulcan, Doctor. Pain is a thing of the mind.

The mind can be controlled.

You're only half-Vulcan. What about the human half of you?

lt is proving to be an inconvenience, but it is manageable.

And the creature, with all of its thousands of parts,

even now, is pressuring me.

lt wants this ship, but l am resisting.

Can he control it the way he says, Bones?

Who knows, Jim? l know the amount of pain the creature can inflict upon him.

But whether he can control it hour to hour...

l have my own will, Captain. Let me help.

l need you, Spock.

But we can't take any chances.

We'll keep you confined for a while longer.

lf you can maintain control, we'll see.

My nephew, if he regains consciousness, will he go through that?

- Yes. - Help them.

l don't care what it takes or costs, you've got to help them.

Jim, aren't you forgetting something?

There are over a million colonists on that planet,

just as much your responsibility. They need your help, too.

l am a Vulcan. l am a Vulcan.

There is no pain.

Mr Spock, l thought you were still confined to sickbay.

- l was. - Where do you think you're going?

l have an errand on the planet surface.

Beam me down to the same coordinates as before.

- Not likely, Mr Spock. - That is an order, Mr Scott.

Aye, sir, and l'm sorry l have to disobey it.

The Captain said no one was to transport down.

Mr Spock.

Freeze right there, Mr Spock, or l'll put you to sleep for sure.

This is Mr Scott in the transporter room. Get me the Captain.

l gave you an order to stay in the sickbay.

Until the pain was gone, Captain. lt has been discontinued by me.

Scotty?

He said he was transporting to the surface.

Your orders were that no one was to beam down.

Knowing Mr Spock's determination on some things,

l thought l'd better hold him here until l got your orders.

One of the creatures will have to be captured and analysed.

We did not have a clear opportunity to do so earlier when l was attacked.

Since my nervous system is already affected, as you pointed out, Doctor,

l don't believe they could do much more to me.

This is ridiculous. l don't want patients running around. He should be in bed.

l'm in complete control of myself, Doctor.

The fact that l am here proves that l do not belong in bed.

Mr Spock...

...your logic, as usual, is inescapable.

Beam him down. Stay in constant touch with us.

Give him your phaser. He'll need that, too.

Thank you, Captain.

Energise.

Jim, that man is sick.

Don't give me any damnable logic about him being the only man for the job.

l don't have to, Bones. We both know he is.

Come in, gentlemen.

l believe you'll find this interesting.

Doctor, your medical skill and curiosity are quite admirable,

but l assure you l'm all right.

You may be controlling the pain, Mr Spock, but you're far from all right.

Unimportant at the moment, Doctor.

Please observe.

lnteresting, gentlemen.

A one-cell creature resembling a huge individual brain cell.

That would answer a lot of questions.

Do you understand what l'm suggesting, Captain?

l think so. This may be one cell in a larger organism.

An incredibly huge organism.

Although it is not physically connected to the other cells,

it is nevertheless part of the whole creature, guided by the whole,

drawing its strength from the whole,

which probably accounts for its resistance to our phaser weapons.

Existing so differently, from any living matter or energy as we know it,

that it may have come here, planet by planet, from an entirely different galaxy.

From a place where our physical laws do not apply.

We may find it difficult to destroy.

But not impossible, Mr Spock.

The Denevan that flew into the sun cried out that he was free, he'd won.

That's the angle to work on.

l want an analysis from medical and life science departments within the hour.

Yes, sir.

l'm sorry, Captain. l've tried everything l can.

Radiation, intense heat, even as great as 9,000 degrees.

You're wasting your time.

lt has to kill the creature without destroying the human host.

Which is my point. The thing won't die.

Even at temperatures which would burn Spock and your nephew to ashes.

l can't accept that, Bones.

We've got 1 4 science labs aboard this ship.

The finest equipment and computers in the galaxy.

l understand your concern.

Your affection for Spock.

That your nephew is the last survivor of your brother's family.

No, no, Bones. There's more than two lives at stake here.

l cannot let it spread beyond this colony.

Even if it means destroying a million people down there.

Captain's log, stardate 3289.8.

l am faced with the most difficult decision of my life.

Unless we find a way to destroy the creatures

without killing their human hosts,

my command responsibilities will force me to kill over a million people.

- Gentlemen. - l regret l see no other choice for you.

We know this thing has destroyed three civilisations. Perhaps more.

l want it stopped, but not at the cost of destroying over a million people.

lncluding myself, Doctor.

And Captain Kirk's young nephew. Understandably upsetting.

But after here, there are dozens of colonies beyond and billions of people.

lf killing five people saves ten, it's a bargain. ls that your simple logic?

l will accept neither of those alternatives.

l cannot let this thing expand beyond this planet,

nor do l intend to kill a million people to stop it. l want another answer.

l'm putting you on the hot seat with me. l want that third alternative.

- Report. - l'm sorry, Jim.

We've made every conceivable test.

l request permission to beam down to the planet.

- l suggest your nephew accompany me. - Request denied.

Captain, l do not make this request lightly.

l do not know how much longer l can hold out against the pain.

But l know what the boy will go through, should he regain consciousness.

Request denied.

There must be another answer.

Something in the sun killed that thing before the Denevan died.

All right.

You've tried heat, radiation...

What other qualities or properties does the sun have?

lt exists physically. lt occupies space.

lt has mass, therefore gravity.

lt converts matter to energy.

Jim, we've been through it and through it.

Radiation, heat...

But one other thing you haven't mentioned.

lt's bright. lt radiates a blinding light, if you're close enough.

- Nothing lethal about light. - Not to us.

But on the surface, the creatures stayed in the shadows.

Suppose they weren't hiding. Suppose they're sensitive to light.

Light, like in a sun, close up.

- A possibility. - You can't move Deneva to the sun.

No, but you can move the equivalent of the sun to Deneva. Mr Spock?

ln essence, it can be done.

A string of satellites around the planet with burning tri-magnesite and trevium.

l can rig a test cubicle in the bio lab, put our specimen in it, but l don't...

Good. Let's get on it.

- Your figures are, of course, accurate. - Of course.

The light of the sun where the Denevan declared himself free

was 1 ,000,000 candles per square inch.

lf this works, the satellites we orbit will produce light of such intensity

that even someone in a closed, darkened area will be affected by it.

- Ready, Doctor. - Put on your masks.

Completed.

lt worked! We can do it.

- What's the matter? We can do it. - lt worked in a lab.

With the creature exposed to everything we can give it.

But what about the infected people?

- l don't know. Maybe... - There's no time for maybes.

- We need to know now. - But l'd have to...

Yes. We'd have to put someone who's infected under that light.

Do you have any idea of the risk?

We have to duplicate the conditions on the planet and Spock...

Captain, you'll need a host for the next step in the test

to determine whether the creature can be driven from the body.

l am the logical choice.

Do you know what 1 ,000,000 candles per square inch

can do to your optic nerves?

We have to duplicate the brilliance

that existed at the moment the Denevan declared himself free.

All right. l'll rig up a protective pair of goggles.

There'll be none on the planet surface, Doctor.

l agree completely.

Unfortunately, you're both right.

lt's the only thing we can do. All right, Mr Spock.

Mr Spock's the best first officer in the fleet.

Proceed.

Completed.

- Spock, are you all right? - The creature within me is gone.

l am free of it and the pain.

And l am also quite blind.

An equitable trade, Doctor. Thank you.

Doctor, the results of the first test on the creature's remains.

Oh, no.

What is it?

l threw the total spectrum of light at the creature. lt wasn't necessary.

l didn't stop to think that only one kind of light might have killed it.

lnteresting. Just as dogs are sensitive to certain sounds humans cannot hear,

these creatures evidently are sensitive to light which we cannot see.

Are you telling me that Spock need not have been blinded?

l didn't need to throw the blinding white light at all, Jim.

- Spock, l... - Doctor, it was my selection as well.

lt is done.

Bones, take care of him.

Completing the seeding orbit, Captain.

21 0 ultraviolet satellites now in position.

72 miles altitude, permanent orbit about the planet.

Good. Scanners?

- Scanners ready, sir. - Very well. Ready, helm?

- Ready, Captain. - Satellite control, this is the Captain.

Energise all satellites.

- Affirmative. - All satellites operative, Captain.

Captain, receiving messages from a ground station.

- Report. - The things are dying, sir. lt's working.

Sickbay.

McCoy here.

Tell Spock it worked.

Yes, Captain. He'll be happy to hear that.

Bones, it wasn't your fault.

Bones?

Bones.

- Record this for Starfleet Command. - Ready, sir.

- The aliens have been destroyed. - Captain, look! Mr Spock!

Spock.

You can see.

The blindness was temporary.

Something about his optical nerves aren't the same as a human's.

An hereditary trait, Captain.

The bright Vulcan sun has caused the development of an inner eyelid,

which acts as a shield against high-intensity light.

Totally instinctive. We tend to ignore it, as you ignore your own appendix.

Mr Spock.

Regaining eyesight would be an emotional experience for most.

- You, l presume, felt nothing. - Quite the contrary.

l had a very strong reaction.

My first sight was the face of Dr McCoy bending over me.

A pity brief blindness did not increase your appreciation for beauty.

lf you are finished, would you lay in a course for Starbase 1 0?

My pleasure, Captain.

Unusual eye arrangement. l might have known he'd turn up with something.

What's that, Doctor?

Don't tell Spock that l said he was the best first officer in the fleet.

Why, thank you, Dr McCoy.

You've been so concerned about his Vulcan eyes,

you forgot about his Vulcan ears.

- Ahead, warp factor 1 , Mr Sulu. - Warp factor 1 , sir.