Watching this overegged hybrid docu-horror investigation of sleep paralysis, I found myself fighting the urge to snooze. Hokey dramatisations accompany a dreary roundelay of talking heads recounting boringly similar dreams of shadow men and shifty aliens, interspersed with clumsily chosen clips from A Nightmare on Elm Street and the alien abduction stinker Communion.

Having playfully picked apart Kubrick’s The Shining in Room 237, director Rodney Ascher here flounders around trying to get a grip on his subject, eschewing insightful analyses for cheesy scares. His subjects are variously distressed by their experiences, but the film signally fails to welcome us to their collective nightmares.