- [the second Doctor is peering around the office of Colonel Crichton, the Brigadiers replacement]
- Second Doctor: You've had this place redecorated, haven't you?
- [shaking head]
- Second Doctor: I don't like it.
- Second Doctor: [the Second Doctor's visit of his old friend Brigadier Allister Gordon Lethgridge Stewart is drawing to a close] Now Brigadier I must bid hail and farewell. I shouldn't even be here at all. I'm not exactly breaking the laws of time but I am bending them a little.
- Brigadier: [Nodding slightly] Yes. You never did care much for rules as I remember.
- [last lines]
- Tegan: You mean you're deliberately choosing to go on the run from your own people, in a rackety old TARDIS?
- Fifth Doctor: Why not? After all, that's how it all started.
- Brigadier: [the Second Doctor and the Brigadier have only just arrived in the Zone on Gallifrey] Charming spot, Doctor.
- Second Doctor: [crossly] My dear, Brigadier, there's no use blaming me.
- Brigadier: You attract trouble, Doctor. You always did.
- The Master: I know this is going to be hard to believe, Doctor, but for once I mean you no harm.
- Fifth Doctor: Like Alice, I try to believe three impossible things before breakfast.
- Rassilon: Others have claimed immortality throughout the ages. It was given to them as it shall be given to you. Your place is prepared, Lord President Borusa.
- Borusa: Oh! Oh!
- [Lord Borusa looks backwards at the space Lord Rassilon has prepared for him. His face appears etched in stone. Lord Borusa's eyes twitch before turning to stone]
- Rassilon: And what of you, Doctors? Do you claim immortality too?
- First Doctor: No!
- Second Doctor: No, no!
- Third Doctor: No!
- Fifth Doctor: That's quite alright.
- First Doctor: As it happens, I am the Doctor. The original, you might say!
- Tegan: But you shouldn't be here at the same time, with him.
- First Doctor: Certainly not.
- Fifth Doctor: It only happens in the gravest emergencies.
- First Doctor: Like now.
- [the Second Doctor tries to get into U.N.I.T. headquarters]
- Sergeant: I'm sorry, sir, you're not allowed in there!
- Second Doctor: Not allowed? Me? I'm allowed everywhere!
- Second Doctor: Have faith, Brigadier. Have I ever led you astray?
- Brigadier: On many occasions.
- Second Doctor: Yes, well, this will be the exception.
- Borusa: We are prepared to offer you a full and free pardon.
- The Master: What makes you think I want your forgiveness?
- Fifth Doctor: [the First Doctor orders Tegan to get refreshments and she doesn't like it] Tegan! Tegan! Tegan! Humour him. I sometimes used to get a bit tetchy; fortunately one mellows with age.
- [the Doctor triggers a trap shaped like a checkered board with coins]
- First Doctor: Nothing happens until you reach the fifth row, halfway, and then the entire board becomes a death trap.
- The Master: [appears from the darkness] Our ancestors had such a wonderful sense of humour.
- First Doctor: Do I know you, young man?
- The Master: Believe it or not, we were at the Academy together.
- Second Doctor: So, you're the latest model?
- Fifth Doctor: Yes, and the most agreeable.
- Second Doctor: Well, certainly the most impudent.
- Third Doctor: And our dress code hasn't improved much, has it?
- First Doctor: Neither our manners.
- Susan: Oh Grandfather, it's wonderful to see you.
- [they suddenly see a Dalek's shadow]
- Susan: Is this place Skaro?
- First Doctor: Perhaps what brought us here brought the Daleks too.
- [the Dalek appears]
- First Doctor: Run!
- Dalek Voice: You are enemies of the Daleks! Exterminate! EXTERMINATE!
- Third Doctor: Well, I've reversed the polarity of the neutron flow so the TARDIS should be free of the forcefield now.
- Second Doctor: We can't allow it, you know.
- Third Doctor: The tomb is sealed for the best of reasons.
- First Doctor: And when we get back to our own time-streams, it must be sealed again.
- Second Doctor: Doctor, we need you! Join us!
- First Doctor: He can't. It's some kind of mind lock. Fight it, my boy, fight it! Concentrate!
- Second Doctor: We must be one!
- Fifth Doctor: [the first three Doctors break Borusa's control over the Fifth Doctor] You see, Borusa? Together, we're a match for you!
- Borusa: Perhaps, but you will never overcome it.
- Fifth Doctor: But Chancellor Flavia will be here with her guards... or will you overcome the entire High Council?
- Rassilon: [suddenly appearing as a hologram above the crypt] This is the Game of Rassilon!
- Borusa: I am Borusa, Lord and President of Gallifrey.
- Rassilon: Why have you come here?
- Borusa: I come to claim that which is promised.
- Rassilon: You seek immortality?
- Borusa: Yes.
- Rassilon: And who are these three?
- Borusa: These are my servants.
- Second Doctor: [angrily] We most certainly are not!
- Third Doctor: Don't believe him!
- Fifth Doctor: That's nonsense!
- First Doctor: Don't believe them, Lord Rassilon! President Borusa speaks the truth!
- Rassilon: You believe that President Borusa deserves the immortality he seeks?
- First Doctor: Indeed I do.
- Rassilon: He shall have it. Take the ring. Do you claim immortality, Lord Borusa? You will not turn back?
- Borusa: Never!
- Captain Yates: [the Third Doctor reaches a corner in the Dark Tower and, after looking around it, starts to walk back. From around the corner steps Captain Mike Yates] Doctor? Doctor, this way.
- Third Doctor: Mike? Mike Yates? How did you get here?
- Captain Yates: Same way as you. Liz Shaw is here, too.
- [Liz enters]
- Third Doctor: Good heavens. Hello Liz. Any more of you?
- Liz Shaw: Someone you should know very well. Come and see for yourself.
- Third Doctor: Ah, not that little fellow in the checked trousers and the black frock coat?
- Liz Shaw: And more - there are five of you now.
- Third Doctor: Oh, good grief.
- Captain Yates: And they're waiting for you.
- Third Doctor: Yes, well, you wait here for a moment - I'll go and get Sarah.
- Captain Yates: I'll fetch her.
- Third Doctor: No, I, er... I think I'll go, Mike. She's nervous enough as it is.
- Liz Shaw: Let Mike go. Your other selves need you urgently.
- [the Third Doctor stares at Liz and Yates for a moment]
- Third Doctor: No, I think I'll go thanks.
- [He runs off]
- Captain Yates: [fails to stop Third Doctor] No, Doctor!
- Liz Shaw: Stop him!
- Third Doctor: [runs down the corridor] How? You're phantoms - illusions of the mind!
- Liz Shaw: STOP HIM!
- [Liz and Yates disappear]
- Sarah: [sitting at the stairwell] What's happening? Doctor? Doctor!
- [She jumps up and runs into the Third Doctor as he returns]
- Sarah: Oh, there you are.
- Third Doctor: Sarah?
- Sarah: Sarah? Of course I am. What are you talking about? Listen - why did you leave me for so long? And what was that scream?
- Third Doctor: They were just phantoms from the past.
- Sarah: Yes, well, I'm in the present and I'm real.
- Third Doctor: Yes. Yeah, you're real enough. Come on.
- [They head down the corridor in the opposite direction from which the Third Doctor saw Liz and Yates]