Hello and welcome to Mysteries of Science.

My name's Stevie and I'm the Deputy Editor of Science and Nature, the monthly magazine from the team behind the week junior.

And I'm Michael, the Features Editor. Science helps us to understand the universe, but there are some strange cases it still hasn't solved, including this one.

Have you ever spotted someone who looks exactly like someone else you know?

Maybe they look like one of your parents, siblings, friends, or maybe even you.

And yet, despite looking so similar, you've never met this person before.

They have no relation to you whatsoever.

Sounds spooky, right?

These unrelated body doubles are known as doppelgangers, a German word which means double

walker and they have fascinated scientists for years.

But what could explain such striking similarities?

Let's take a look in the mirror to find some answers.

This is mysteries of science.

So Michael, have you ever come across your doppelganger?

Well, I haven't met them myself, but I know other people who have. So if any of you

listen to The Wheat Junior show, then you may have heard the voice of Vanessa, the editor

of the Wheat Jr. She regularly gives me updates on my doppelganger, who she's seen

walking out and about near where she lives. How about

you, Stevie? Well, like you, I haven't seen mine, but I have know a lot of people who have said

that I've got one walking around somewhere in London. I also get likened to Ginny Weasley from

Harry Potter quite a lot as well, so I wonder if she's my doppelganger. Well, how about we speak to a doppelganger expert?

This person has perhaps seen more pairs of doppelgangers than anyone else in the world.

...