I once killed someone who just happened to be behind me at the wrong moment.

More to the point, why was I fighting death, once already killed?

He is said to have once killed 50 bears at a time.

So ready to do it, now that I've killed once.

I once killed thirteen of them in a single place.

If a person's killed once, he's likely to kill again.

I was pretty sure Ranger had once killed a man to protect me.

He'd been killed once, so presumably he could die again.

I'd even thought about killing him myself once or twice, but now that his death was a fact I didn't know how to feel.

You've found women killed in your office more than once?