Police are looking for a very dangerous individual who shows up at crime scenes and kills random innocent bystanders.

After months of investigation, they now believe the name of this individual is a Mr Rick O'Shea.

Hey - I remember that the Seattle Times carried his comic strip, many years ago - my favorite character in the strip was the 'gun-flinger'

How exactly is that a serial killer O_O?
I don't get it, what is the significance of richochet.