As a work of cinematic art, "The Devil's Sleep" MAYBE would score a 2. But I gave it a 7 because not all valuable movies need be cinematic masterpieces. I doubt if there were any scenes that exceeded one take. The acting is cringeworthy and production values in the basement. But the film is a magnificent window into a post-war emergence of teen rebellion and nascent drug culture that grew throughout the '50s then into the '60s. As a celluloid documentation of social change it is precious metal. It could be a prequel to "Wild Ones" or "Rebel Without a Cause"
Oh, and watch for an exposed breast @26 min or so.