Just South of Whiterun is a bridge.
On the bridge was an old biddy walking along towards the farms.
As I approached she started looking up at the sky.
"Eh up!" I thought. "A Dragon maybe?"
I looked up and sure enough there was a shiney black Dragon circling.
The old biddy put up her dukes before starting to run.
Then Dragon swooped at her. It did that a few times before she died and the Dragon flew off over the mountain.
It totally blanked me! I thought it was supposed to try and get me but it paid me no heed once the old croan was dead.
I was in such a scramble to prepare to fight it that I missed how it killed her as well.
It was weird to say the least.