Go behind the scenes of one of TV's most watched true crime series with the 48 hours post-mortem podcast, where correspondence and producers take you inside each case.

Every Monday, listen to a new episode of 48 hours, and then join me, 48-Hours correspondent Anne-Marie Green, every Tuesday for a new episode of Postmortem. Follow and listen to 48

hours on the free Odyssey app or wherever you get your podcasts.

It's a hell of a thing to be told you have months to live when you're 20 years old. But that's what happened to

Stephanie Lipscomb in 2011, diagnosed with the worst kind of brain tumor, glioblastoma. She became

one of the first patients in Duke University's cancer trial to be given, of all things, the polio

virus, as a last chance to fight her disease.

Today, four years later, she is cancer-free, and she's not the only one.

This to me is the most promising therapy I've seen in my career, period.

60 Minutes has been following this daring experiment for more than two years, and now the

federal government has given it rare breakthrough status, meaning this dramatic new way of treating

cancer will become more available all across the country.

Before you put handcuffs on someone and take them away,

that you've got to make sure that you've got your case together

and that the facts add up.

And in these cases?

Facts didn't add up.

The U.S. government has launched aggressive investigations

and a greater number of prosecutions to stop

the theft of American trade secrets by suspected Chinese spies. But we've discovered the dragnet

is ensnaring a growing number of Americans who aren't spies at all. I'm Steve Croft. I'm Leslie Stahl.

I'm Bill Whitaker.

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