For decades, anime and manga fans braced themselves for the worst whenever they knew a live-action adaptation was coming. Outcomes have all too often been sullied by stories that somehow fail to fulfill the purpose of their source material. Netflix's Parasyte: The Grey is the surprising exception. Under the direction of Train to Busan and Hellbound creator Yeon Sang-ho, the series reinvents Hitoshi Iwaaki’s iconic horror manga.