Sarcasm much? I have to kill 3 people for that crazy guy who says people are spying on him.
...
Maybe if you select the guards dialog option for:
"Yes I murdered those three people in cold blood. But I had too! Some weird guy I just met told me to murder them." then maybe he'll understand.
Or just "pay the fine" murder is surprisingly cheap. Or as mentioned above join the theives' guild, they have an arrangement that can get you off for less money.
charm 100, fort personality 100
next guard will make all the guards go away until you kill again.
I don't think so. That only works if your bounty is less than 1000, and it won't be less than 1000 with murder.