Bingo, you've been reading the early drafts, havent you? The Revised Rough Draft is full of treachery and murder with Vader and Jerjerrod. A sample:
11. INT. MAIN BAY Super Star Destroyer
As the shuttle settles onto the deck of the docking bay, Imperial ground crews rush about securing the craft. The bay is filled with an impressive formation of Stormtroopers, Guards, Star Captains, and Special Elite Units. As one, the thousands of troops snap to attention, and heads turn to the entrance of the bay. The door slides open revealing the dark Lord of the Sith, DARTH VADER. He walks past the troops toward the shuttle craft. ADMIRAL PIETT and several Star Captains are with him. The Admiral turns to Vader.PIETT
Never before have I heard of the GRAND MOFF leaving the planet to greet someone. You are greatly respected, my Lord.VADER
Or greatly feared. The disgusting little bureaucrat is attempting to lay a trap for me.PIETT
He’s a fool to think that you would not know.VADER
The Emperor’s counsel is no fool. He is very clever and quite dangerous.Vader and Piett stop before the Imperial shuttle. The hatch to the shuttle swings down and a colorful platoon of the Imperial Guards lines up outside the ramp. They salute as a thin, evil-looking man descends from the shuttle. He is the GRAND MOFF JERJERROD. Vader salutes him, but Admiral Piett and all the Star Captains kneel before him. An effete covey of dignitaries descend the ramp, acting as if they have never been on a Starship before.
VADER
You honor me with your presence, My Lord.JERJERROD
Yes, I know. (looking around) You may rise. All this fuss just for me, an impressive display I must say. (sniffs the air) Yes, well the Emperor sends you his blessing….VADER
But he still refuses to answer my transmissions.JERJERROD
I’m afraid he’s quite too busy.VADER
Then why was I ordered to return?JERJERROD
He feels your prolonged stay in the outer systems has not agreed with you.Vader is very angry and it takes all the control he can muster to contain himself. Jerjerrod starts for the hanger entrance. Vader follows.
VADER
Don’t you toy with me.JERJERROD
All right then…. the Emperor is disturbed with your failure to deal with young Skywalker and he has decided to handle the matter personally. You will supervise the construction of the Battle Stations; a task he feels will be much less demanding.VADER
But, I have all but turned him to the dark side of the force.JERJERROD
The Emperor does not share your optimistic appraisal of the situation. Skywalker is more powerful now, than before your feeble attempts to convert him.12. INT. BRIDGE STAR DESTROYER
Vader, Jerjerrod and company walk onto the vast Star Destroyer bridge.VADER
He can’t do this. The boy is mine!JERJERROD
That seems to be part of the problem. It would appear that you still have some feelings for your troublesome offspring.VADER
The only feeling I have for him is hatred.JERJERROD
Then you should be thankful the Emperor has taken such an interest in him. The Emperor will turn Skywalker to the dark side, and then destroy the Rebellion in one swift stroke.VADER
The Rebellion will not be easily crushed, and my son will not be easily turned.JERJERROD
The Emperor will succeed, where you have failed. You are weak Lord Vader, more machine than man. The Emperor’s plan has already been put into motion. The entire rebel force is on its way to us, for one last, hopeless confrontation, so I suggest you prepare your fleet.VADER
My son would not be so foolish as to fall into such a trap.JERJERROD
Ahh but, he is not with them. Your son is on his home planet of Tatooine. He will soon be in our hands, and the Emperor will have his way with him.VADER
Get off my bridge!JERJERROD
As you wish…The Grand Moff turns and walks off the bridge followed by the dignitaries. The Admiral and his Captains go back to their duties. Vader stand alone on the bridge looking out across the vast sea of stars.
VADER (to himself)
Luke, beware, you are the Emperor’s prey now.