On a winter's night in 1974, a crime took place that would obsess the nation.

It was an extraordinary news story.

The story of an aristocrat, Lord Lucan, who's said to have killed the family Nanny,

mistaking her for his wife, then somehow just disappeared.

One of the great mysteries in English criminal history.

We're still looking for Lucan. It's honestly one of the most powerful stories of my lifetime.

I'm Alex von Tundselman. This is The Lucan Obsession. Listen on BBC Sounds.

Wait, so you said you genetically engineered yourself. I put a foreign piece of DNA inside my cells. Wow. Crowd science is the podcast

that takes your questions about life and the world around us and goes in search of the answers.

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wherever you found this podcast.

I remember getting to this junction, and in the middle of the junction was a black police officer.

I remember standing there and just staring at this guy, and he was directing traffic,

and he put his hand off to stop the cars.

And all the cars stopped.

And I remember like, whoa, this was just incredible.

You make him sound like a superhero.

To me, he was.

And looking back on it, it was the first time I'd seen a black person in a position of power.

And I remember staring at him.

And I said to my dad back there, said, that's what I want to be when I grow up.

And my dad slapped me around the face and said, over my dead body.

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