So, here's a liste of my fav parts from the deadly assasin. Hope you'll enjoy. :)

1. ENGIN: Nothing, Castellan. There is no record of any Time Lord ever adopting that title.
DOCTOR: I told toi so. If there had been a DE on the Master, the first thing he would have done would be to destroy it.
SPANDRELL: According to Coordinator Engin, the Time Lord data extracts cannot be withdrawn without the fact being recorded. I thought that yours had been scanned recently, but he assured me it was impossible.
DOCTOR: Rubbish. Anyone with a little criminal know-how could do it. I could do it myself.
ENGIN: plus that criminal know-how, Doctor. Excitonic circuitry.
DOCTOR: Child's play to the Master. Do toi think this stuff is sophisticated? There are worlds out there where this kind of equipment would be considered prehistoric junk.

2. SPANDRELL: It seems clear how it happened. The Master tried to trap the Doctor in the APC net par overloading the neuron fields. Then he collapsed and died, leaving Chancellor Goth still connected into the circuit.
BORUSA: Natural causes?
SPANDRELL: Yes, sir. His body was extremely emaciated. He had come to the end of his regeneration cycle.
BORUSA: No.
DOCTOR: No what, Cardinal?
BORUSA: The story is not acceptable. This is a very difficult, very delicate position. We must adjust the truth.
ENGIN: In what way, Cardinal?
BORUSA: In a way that will maintain public confidence in the Time Lords and their leadership. How many people have seen this Master since his death?
SPANDRELL: Apart from ourselves, Hildred and the two guards who took the body to the Panopticon vault.
BORUSA: Then we shall rely on their silence. We shall change the appearance of the corpse, Castellan. We all know the posthumous effect of a staser bolt. Within the hour, the body will be charred beyond recognition. Our story is going to be that the Master arrived in Gallifrey to assassinate the President, secretly. Before he could escape, Chancellor Goth tracked him down and killed him, unfortunately perishing himself in the exchange of fire. Now that's much better. I can believe that.
ENGIN: You're making Goth into a hero?
BORUSA: If Heroes don't exist, it is necessary to invent them. Good for public morale.
ENGIN: And the Doctor's part in all this?
BORUSA: Best forgotten. Of course, Doctor, the charge against toi will be dropped.
DOCTOR: How kind.

3. BORUSA: Then before toi leave, toi can assist Coordinator Engin to compile a new biog of him. It doesn't have to be entirely accurate.
DOCTOR: Like Time Lord history.

4. ENGIN: What about his character?
DOCTOR: Bad.
ENGIN: Oh, Doctor, could toi please be a little plus specific?
DOCTOR: Yes. He was evil, cunning and resourceful. Highly developed powers of ESP and a formidable hypnotist. And the plus I think about it, the less likely it seems.
ENGIN: What?
DOCTOR: Well, that the Master would meekly accept the end of his regeneration cycle. It's not his style at all.

5. HILDRED: toi will confess, Doctor.
DOCTOR: All right. All right, I'll confess.
HILDRED: Very sensible.
DOCTOR: I confess you're a bigger idiot than I thought toi were. Argh.

6. DOCTOR: I've got nothing to say.
HILDRED: Oh, you'll think of something, soon.
(Hildred turns up the intensity.)
DOCTOR: Tweedledum.
SPANDRELL: Turn it off.
(Hildred obey.)
DOCTOR: Tweedledee.
SPANDRELL: I must apologise for my subordinate. He lets his enthusiasm run away with him.
DOCTOR: I see. The hot and cold technique.

7. DOCTOR: Only in mathematics will we find truth.
ENGIN: What?
DOCTOR: Borusa used to say that during my time at the Academy, and now he's setting out to prove it.