The Tomorrow People1973

Glip:
What is there on that dump of a planet that's worth so much to you?

Yagon:
I suppose it's time you both knew. Have you ever heard of barlamin?

Glip:
Barlamin?

Cantor:
Barlamin?

Yagon:
[to Cantor] Don't repeat every word I say.

Glip:
Yes, I've heard of it, but is there really such a thing?

Yagon:
Yes, there is. It's very rare but it does exist. And WHY do you think you never see it? Because the Galactic Federation destroys every deposit they can find. Barlamin is the only known matter in the universe that can drain them of their special powers. Barlamin - quite harmless to us, but super beings fear it more than death itself.