As far as horror movie premises go, that's a decent one, even if it is heavily referential, giving shout outs to everything from Neil Marshall's masterful subterranean chiller "The Descent" to the aforementioned "Flatliners," and a whole bunch of movies in between (the opening awkwardly apes "The Da Vinci Code," among others).
It’s a real shame, too, because director John Erick Dowdle–whose credits include 2008’s muddled Quarantine and 2010’s effective Devil— creates moments that recall the claustrophobic terror of the awesome spelunking epic The Descent .
In fact, the first part of As Above recalls the unnerving underground discomfort of The Descent, another caves-are-terrifying thriller.
In terms of the sheer claustrophobia seeping from its every pore, "As Above, So Below" reminds favorably of 2006's terrifying cave-diving thriller " The Descent ."
Instead, it inspires thoughts of the superior "The Descent," a genre classic that involved a group of women trapped in a cave.
He certainly borrows a few lessons from Niel Marshall’s The Descent – and then, takes those ideas a step further – using the setting of subterranean exploration as THE principal scare source and threat throughout the film.