“Among The Living” (*1/2 out of four) was a dreary horror thriller set in (yawn) the midst of a deadly worldwide outbreak in which an older brother (Dean Michael Gregory) fights to protect his younger sister (Melissa Worsey) while they are isolated at a cabin from ravenous zombies who have a predatory thirst for blood. Yet another in the derivative vein of “28 Days Later”, “Cabin In The Woods”, and (of course) “Night Of The Living Dead” and not all that different from this week’s similar (and better) “In Isolation.” It’s horror filmmakers themselves who need to thirst for new blood and new ideas. Gregory’s strong performance is one of film’s few vital signs.