Whilst adding some skulls to the skull pile, adding some weapons to the weapon pile and other homely things in whiterun home, I suddenly find a character in blue stormcloak uniform storming down the stairs. 'Stormcloak courier' his name is, and he runs for the door. Untill I press 'e', upon which he stops and turns around saying 'wait, I know you!'. Took some time there to scratch my head in utter confusion and eventualy proceded down the 'no you dont' conversation line, ending it with 'id rather die than go to prison!' (25 bounty? never!). Courier, maybe inspired by the skull pile, turned around again and ran right out the door.
Naturaly I chased him; seemed intersting. Skull pile wasnt quite as big as I wanted either. Whiteruns loads along with courier running for the main gates, a town guard and... Farkas, shouting generic combat lines. Guard was angry, maybe hes friends with courier. I decided to leave Farkas and guard to resolve themselves and chased courier thorugh the main gates.
Regretably this drew along quite a few more guards (and Farkas...) and courier was nowhere to be seen. This fairly quickly ended in a dead farkas, and a lot less quickly in lots of dead guards and a dead me.
Not content with this I loaded from the point where I exited whiterun home, this time killing courier with a wood axe and lots of poison and bravely teaming up on the guard with Farkas. It was evening, town was deserted, and two fresh corpses were in the middle of the road. I made the perfectelly rational decision to shout them to the edge of the road (was aiming for the channel but I been lazy with the main quest) and walked down the road, wondering what the next guard will think of it all. (Farkas is not impressed with killing random people, but he sure finds the shout interesting).
Soon next guard turns a corner, who runs at me saying... 'Those shouts, dont do them! Makes us nervous!'. 'Wont happen again'. And guard proceded down the road, not at all bothered by fresh corpses.
Good laughs have been had. Courier's inventory contained nothing unusual either, no letters or any clue why he was in my house or accused me of a pickpocket fine.
