Hey, I'm Brian Stelter. It's time for reliable sources. This is our weekly look at the story behind the story.

In this hour, the headlines are about Joe Biden, his victory in the South Carolina primary.

It has changed the narrative of the Democratic race, at least for a day.

But Michael Bloomberg is countering with some big TV hits and an even bigger pot of money for TV ads.

I'll be joined by senior staffers from both the Bloomberg campaign

and the Bernie Sanders campaign.

You know, Team Bernie is continuing to blast MS NBC.

They say the candidates being slighted.

What's really going on there?

We're gonna get into that, plus Trump's legal stunt.

He is suing the New York Times for this opinion headline,

and my guests have some opinions about that.

Lots to get to, but first, as this morning's Los Angeles Times says,

Saturdays news of the first US death from the coronavirus marks a turning point in the

United States. Television screens are filled with maps like this one showing the

virus spreading around the world.

But let's remember that fear is a virus too,

and it can be just as damaging.

News outlets have a really important job to do right now,

conveying accurate information, and part of the job is to

tamp down on undue fears. Unfortunately, this virus has infected the political arena in ways that

are truly

...