“Killer Shark” (** out of four) was an overall generic horror thriller set in China about six young people (Qiu Pincheng, Liang Jingjing, Shu Guilin, and others) trapped at sea who are terrorized and mauled by a man-eating shark who has been mutated by pollution. The shark attack scenes are unusually vivid and deliver the goods but the rest of the movie as a whole is familiar and by-the-numbers. By this point- there may not be much new anyone can do with the shark attack genre.