Hello and welcome to Haunting Pergatory's premiere podcast. I'm your host

Teresa. We'll be bringing you different ghost stories each week straight from the

person who experienced it firsthand.

Some will be unsettling, some unnerving, some even downright terrifying.

But all of them will be totally true.

Listen to haunting on the I Heart Radio app, Apple Podcasts, or wherever you get your podcasts.

Welcome to Stuff to Blow Your Mind, a production of I Heart Radio.

Hi, my name is Robert Lamb, and this is The Monster Fact, a short-form series from stuff to blow your mind focusing on mythical creatures, ideas, and monsters in time.

In the previous episode of The Monster Fact, we began our alien series with a look at the mysterious

engineers.

Today we'll turn to this elder race's most dangerous creation, a highly volatile genetic accelerant

classified by human researchers as Agent A0395939.91-15.

In its purest form, this so-called black goo does in fact resemble a viscous tar-like material or liquid.

Human explorers first discovered the substance amid the ruins of an engineer outpost on the

planet designated LV-223.

They found the goo and quartets of glass-like vials secured in stiotide

ampules or earns. The engineers had secured it there like a precious treasure, like the remains of the dead,

like a devastating bio-webbing. The pinnacle of the engineers advanced biotechnology,

we can even think of Agent A039X.91-15 as a kind of biological AI that

reprogrammed everything it touches, perhaps following specific instructions, general directions, or

left entirely to its own generative impulses.

As revealed in the film's Prometheus, an alien covenant,

...