And now for something completely unpleasant.

“Night Explorers: The Asylum” is about streaming channel extrepreneurs who encounter more than they bargained for when they visit “the most haunted place on Earth.”

OK, they’ve probably used that hype line more than once or twice. But these “Night Explorers” are sure this asylum that was “shut down because of satanic rituals by the staff” will produce “real” evidence of the supernatural, and not the “fake” stuff they lean on to keep viewership up in “the time of ‘scripted reality'” TV.

Boy, are they in for a surprise. Boy are we in for an abrupt shift from “Things that go bump in the night in the about-to-be-demolished-madhouse” to “Saw” styled slaughter and “traps” and such.

This British production sets us up for frights, with eight supernaturalists with camcorder and cell cameras, a drone and “spirit box” and EMF meters giggles and “woo woooooos” their way into Pelosi Asylum. I think that’s what it’s called. But they’re British, so it could be spelled Porcestershire.

The cast — Craig Edwards, Hanna Al Rashid, Monte Solomons, Algina Lipskis, Neal Ward, April Luong, Dave Dyer and Charlie Rich — play poorly-sketched-in “types” who make no impression in their introductions or the “party” the night before their latest taping. Then they show up, having paid for the privilege to “investigate” and look for ghosts in the abandoned mental hospital.

They hear noises, decide to split up and gather “evidence” on video in small groups, leaving one hapless bloke behind at the “only entrance” to the place. And just as they’re gearing up for ghosts, figures start lunching out of the dark to stab, bash in skulls and pitilessly puncture them one by one, maybe parking the perforated on a pentagram as the urge arises.

“Right. That’s it. No more splitting up!”

Yes, they’re “locked in here like some s–t horror movie” because, truth-be-told, they’re locked up in “some s–t horror movie.”

There’s an odd attempt at artfulness in this John K. Webster film, which relies on found-footage-style swish-pans, quick cuts and the like until we see things from the attackers — supernatural or otherwise — eye-view — a camera hurtling headlong down hallways, from room to foyer to stairwell, hunting for “investigators.”

And the violence can have a jolting, suspenseful edge as we wonder who will try to fight back, and when, and who among these attention-craring/perform-for-the-camera millenials will be any good at fighting back.

But all things considered, “Night Explorers” — some windows show their all-nighter-in-the-asylum is taking place in daylight — doesn’t manage its bait-and-switch plot well, doesn’t give itself time to let the characters connect with the viewer and doesn’t do anything we haven’t seen before or need to see again.

Rating: unrated, graphic violence, profanity

Cast: Craig Edwards, Hanna Al Rashid, Monte Solomons, Algina Lipskis, Neal Ward, April Luong, Dave Dyer and Charlie Rich

Credits: Scripted and directed by John K. Webster. A Level 33 release.

Running time: 1:36