Deranged (2012): Cast, Box Office & Plot

Jae-hyuk is a former professor with a doctorate in biochemistry who has fallen from academic prestige to a humble role as a pharmaceutical sales representative after a disastrous stock market bet—a gamble his younger brother, Jae-pil, urged him to take. The siblings’ lives spiral further when a string of corpses starts washing up in the Han River, signaling the rise of a terrifying, brain-controlling threat: the Yeongasi, a mutant parasitic horsehair worm. As the parasites mature, those infected suffer a crippling hunger and an insatiable thirst, driving them to leap into water so the worms can emerge. The public, already shaken by the deaths, watches officials scramble for answers while the authorities try to keep pace with the unfolding crisis.