Warning: This article contains spoilers from the season 16 finale ofGrey’s Anatomy.

What’s wrong withRichard Webber?

That was the question everyone was asking going into theseason 16 finaleofGrey’s Anatomy.

Grey’s Anatomy

Credit: Bonnie Osborne/ABC

Was it Alzheimer’s?

Was it some mysterious illness we’d never heard of before?

And in more good news, it was revealed that all Richard’s symptoms could be reversed.

So he was dealing with a myriad of different things there in his life.

I’m feeling pretty lucky about that.

It was nice to play, too.

They did tell me that it was cobalt poison, which I knew nothing about.

And it was such a specific issue.

And it is somewhat common, so yeah, it gave me something nice to kind of reach for.

Oh yeah, absolutely.

It’s kept me engaged as an actor.

There have been a couple.

Obviously, the alcoholism.

That was really something that was kind of cathartic for me on a personal level.

And then there was a flashback episode, which was basically about my mother.

So there’ve been a few of them, but those two stick out for me.

And this one now, absolutely.

Did they let you know going into the cobalt poisoning story that Richard would be okay?

Yeah, they did.

Look, I’ve been doing this a long, long time.

I take nothing for granted.

But they let me know right off.

They said, “Don’t worry, you’re going to be fine.”

I said, “Okay.”