Isra Elpanti. Hi. How are you? Welcome to today explained. Thank you so much, Sean.

The friend of the show. I yes. I am.

Colleague here at Vox Media. Yes indeed. I hear you might have a mattress problem.

You know, so far I actually, I've had this mattress for 16 years.

16 years. I bought it 16 years ago at mattress firm actually.

Wait, wait, wait, I want to hear all about it.

Mm-hmm.

Okay.

Sometimes when you want to catch a criminal, you have to catch his great, great, great, grandparent first.

That's how police in California finally track down the guy they think is the golden state killer.

After four decades. My detectives arrested James Joseph,

DiAngelo, 72 years old, living in citrus heights.

I can tell you that although it was DNA, ultimately, that let us down the right road,

there are a lot of places that road could have led.

Since the arrest was made last week, a lot of people have taken issue with some of the tactics police used.

Cops took DNA people submitted to genealogy sites to track down relatives and instead used it to track down a murderer.

We're going to tell you the story in two parts, golden state killer and DNA controversy.

The first part has a lot of grizzly details and audio from the killer and one of his victims too.

So if you'd rather not hear that kind of thing, skip ahead to the second half of today's show.

It starts around minute 10.

Okay, here we go. Asia Romano has been writing about the golden state killer for Vox.

In 1974, a man who would go on to terrorize most of California began a series of regular break ins

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