MacDara Conroy’s review published on Letterboxd :
Beyond the Black Rainbow could be a good deal shorter; the final half-hour really tries the patience. It's also a little too much in thrall of its influences (David Cronenberg's films and Ken Russell's Altered States for the most part, but also Carpenter, Argento, maybe even Boards of Canada and the video game Bioshock?) to stand on its own as a mindbending psycho-horror. But Panos Cosmatos' debut feature at least steals from the best, while the villainous Michael Rogers steals this very picture with his malevolent presence.