WATCH: the trailer for Netflix's Don't F**k With Cats is here and it looks absolutely harrowing 7 months ago

WATCH: the trailer for Netflix's Don't F**k With Cats is here and it looks absolutely harrowing

"Something bad is about to happen."

The internet can be a nice place.

A place for connectivity, a place for education, a place for sharing photos of your eighth holiday of the year in order to actively make every single person you know in the world jealous.

But then it can also be a terrifying place - one where videos of men torturing and killing kittens are shared happily, with the intention of shocking and upsetting.

Enter internet sleuths, the regular people who are determined to locate these people and bring an end to their reign of terror.

And so goes the story of Don't F**k With Cats: Hunting an Internet Killer, Netflix's upcoming documentary about a man who went from killing kittens to killing people - and sharing the proof online.

After the first initial video - aptly called '1 boy 2 kittens' - people began searching.

They analysed door handles, they isolated voices, they considered where in the world this cat killer could be. And what they would have to do to try and find him.

What ensues is a worldwide manhunt spanning countless countries and hundreds of websites, conducted by an ever-growing group of people desperate to find out just who is behind the harrowing videos.

Don't F**k With Cats: Hunting an Internet Killer is streaming on Netflix from December 18.

You can check out the full trailer below: