SPOILERS wanted, please bring me up to date on 6 Feet Under

I caught the season finale of Six Feet Under but missed one or two recent episodes. What’s going on with Keith? As near as I can remember, he was involved in a shooting incident, but as far as I could see (or remember), his action was justifiable under the circumstances. Also, he turned in his sister, who’d been submitting her daughter’s urine as drug-test samples.

At any rate, he appears no longer to be a cop, since he and David were talking about his trying to get a new job.

Or is he on indefinite suspension?

And what’s the deal with Buchbinder? Why was Nate so broken up over his dying?

You can find detailed recaps of all the episodes here.