“DO NOT click the link! Do not click the link!” The floppy-haired young man screams at his laptop, but we know his friends are going to die anyway. It is why we watch horror films.

A group of twenty-somethings are hanging out via video chat. One of them is using a laptop that someone left behind in a cafe. He shows his friends a hidden folder that connects him to a strange part of the internet.

“Dude, this is dark web,” says one of them. …