Stabbing in the park

Did you see what happened?

The girl was just ahead of me, walking up the path and suddenly this man on a bicycle rode past and stabbed her.

Not even a word?

Nothing. He just slowed down and poked a knife at her and she gasped and fell, and he rode off. Over there.

Did you try to stop him?

It was all so quick. It was over before I even realized what had happened. I felt so stupid.

Some weird people in this park at night.