A series of strange and violent deaths rocked Osage County Oklahoma a century ago.

Sisters Rita, Mini, Anna and their mother Lizzie all left behind lucrative rights to the

oil beneath Osage land, while lawman Tom White was horrified by the chilling plot he uncovered.

Join me, Tim Harford, host of the Corsary Tales Podcast, for my new two-parter on the Osage

Killings, the story behind the book and film Killers of the Flower Moon.

Part one is available now wherever you get your podcasts.

I interviewed Jimmy Carter on my show when he was president.

But it was very different sitting with him in First Lady Rosalind, coupled to couple,

and talking about something as personal as our marriages.

We flew down to Atlanta and met them at the Carter Center, their legendary humanitarian foundation.

This was our first interview for this project and what a way to start with American royalty.

We were shown into his very formal office. I remember the two huge flags on either side of the desk,

one with the stars and stripes, and the other with the presidential seal.

And he just came bounding in, this man in his 90s, and he pointed out a beautiful wooden chair that he had carved himself.

He was impressive. I'm sure it must be a challenge for Rosalind to keep up with his energy.

They've been together for an unbelievable 75 years.

So we had to ask them, how?

First of all, love and friendship goes together.

And we found a long time ago that arguments and disagreements are inevitable among two strong will people.

But we decided quite early in our marriage to give each other plenty of space.

In fact, if Rosalind's interested in something, she doesn't go her own way and she accepts my help when she needs it.

And vice versa, when I have a special interest, she gives me a penny of space of time to work on my own projects.

...