Villain traces the story of sadistic gang chief, Vic Dakin, a murderous criminal who becomes obsessed with exterminating those who threaten to bring down the empire he has created. Aside from conducting various payroll robberies, Dakin and his on-again off-again pimp sidekick, Wolfe, blackmail certain members of Parliament who have a history of partaking in unorthodox sex practices. What Dakin doesn't know is the extent to which Scotland Yard Inspector Bob Matthews is vigorously tracing his every move. As the story progresses, members of Dakin's clan are not as loyal as he thought. Will it jeopardize Dakin's criminal empire?