Peter Debruge Chief Film CriticIn director Mark Raso’s occasionally engaging but mostly frustrating sci-fi thriller, an unexplained event causes a massive electromagnetic pulse that fries most electronics and leaves nearly all of humanity incapable of sleep. From the mysterious incident onward, the characters slowly slide toward insanity as fatigue takes its toll, although it’s not clear how everyone on earth immediately recognizes (or believes) that the resulting restlessness is permanent.