“Double Blind” (*** out of four) was an unexpectedly creepy and effective horror psychodrama about various test subjects (Millie Brady, Akshay Kumar, Diarmuid Noyes, and others) of an experimental drug in a secluded facility who realize the terrifying side effect that if you fall asleep you die and they all try to collectively stay awake and preserve their sanity while trying to stay alive. Edgy and tense story places its shock and gore scenes with solid skill and never loses its grip. Unlike most other movies of this caliber, it’s also very well-acted and doesn’t overstay its welcome at an hour-and-a-half.