YMMV / Nailbiter

• Complete Monster: Garth "Morty" Diggins, better known as The Master, is the secret mastermind of the evil behind the town of Buckaroo, Oregon. Having come to Buckaroo decades ago, The Master experimented with killers to discover what turns a person into one. Having discovered a "Serial Killer gene", the Master took those who tested positive and mentally tortured them to activate the latent gene within them, resulting in over a dozen becoming serial killers known collectively as the Buckaroo Butchers. When Agent Finch and Sheriff Sharon Crane begin investigating the disappearance of an FBI agent who got too close to the truth, the Master reveals he tortured and mutilated said agent before turning an FBI agent into a killer to have her finish the job. Murdering many others who get too close to the truth, even creating a new serial killer to murder anyone who flees Buckaroo, the Master finally decides to start over elsewhere by trying to burn the entire town of Buckaroo to ash with its inhabitants, being more vile than any serial killer himself.
• Squick: Warren's predilection for biting on the nails of his victims.