- [Intro, this episode only]
- Narrator: The finger is on the trigger... about to unleash a force with terrible powers, beyond the comprehension of man. This force we shall know as, The Mysterons.
- [cat howls, gun fires]
- Narrator: This man will be our hero, for fate will make him indestructible. His name... Captain Scarlet.
- [to the crew of the MEV]
- The Mysterons: Earthmen, we are peaceful beings and you have tried to destroy us, but you cannot succeed. You and your people will pay for this act of aggression. This is the voice of the Mysterons. We know that you can hear us Earthmen. Our retaliation will be slow, but nonetheless effective. It will mean the ultimate destruction of life on Earth. It will be useless for you to resist for we have discovered the secret of reversing matter as you have just witnessed. One of you will be under our control. You will be instrumental in avenging the Mysterons. Our first act of retaliation will be to assassinate your World President.
- The Mysterons: The first of the Earth space travellers have arrived. They too have a curiosity about the universe we live in. We must welcome them. Let us take a closer look.
- [after the fake Captain Brown and the World President enter a secured bunker]
- World President: So this will be our home for the next few weeks. I hope you play a good game of three-dimensional chess, Captain?
- Captain Brown: [after a short pause] I play a very good game, sir.
- World President: [as he sits down] What's that?
- [next shot shows a security camera on one of the walls]
- Captain Brown: [sitting down] Don't worry, sir, it's electronic eyes. They're watching our every move.
- World President: Well, I can see I have nothing to fear while I'm in the hands of the SPECTRUM organisation.
- [Captain Brown stays still and says nothing]
- World President: I was saying, Captain Brown, I have no worry while your organisation is looking after me.
- [Captain Brown still says nothing]
- World President: [concerned] Captain Brown? Captain Brown, are you all right?
- [Captain Brown's body starts to smoke]
- Captain Blue: [to Captain Scarlet] Okay, Captain, you don't stand a chance! You throw your gun away, and I'll come in and pick you both up.
- World President: You heard him, Scarlet. Do what he says.
- [Captain Scarlet fires at Captain Blue as the London Car-Vu continues to collapse]
- Captain Blue: Okay, Captain Scarlet. It's either gonna be you, or me.
- [Gun fire is exchanged and Captain Scarlet is hit causing him to fall of the car view]
- Captain Scarlet: Aghhhhhhhh
- [On their way to protect the World President]
- Captain Scarlet: Well, your first big assignment. I wish you luck.
- Captain Brown: Thanks. Do you think the President's life really is in danger?
- Captain Scarlet: Well, judging by what happened on the Martian expedition, I'd say the Mysterons have the capability of carrying out their threat.
- Captain Brown: If only we were fighting something we understood. Something tangible. Something in three dimensions.
- Captain Scarlet: I know what you mean. We can only hear them over our radios, but I've got a feeling they're with us all the time.
- [the Mysterons take control of their car causing it to crash]
- Colonel White: Captain Scarlet is now trapped! Soon, he will be climbing the Car-View and when he gets to the top, that's the end of the line!