Underworld

Beneath the city lies a secret world inhabited by mutants addicted to a terrifying new drug created by the mysterious Dr Savary (Denholm Elliott). Their only hope of salvation lies in Nicole (Nicola Cowper), forced to work in a high-class brothel by Savary but, for reasons unknown, unaffected by the drug's mutations. When the mutants kidnap Nicole, private investigator Roy Bain (Larry Lamb) is hired by the brothel's owner (Steven Berkoff) to bring her home. But, as he descends deeper into the subterranean labyrinth, what starts as a rescue mission soon spirals into a frantic battle for survival.