Track of the Vampire / Nightmare Castle

In the first film of this fright-night double feature -- Track of the Vampire -- a crazed California artist (William Campbell) kills beautiful girls and then turns them into works of art. The second film -- Nightmare Castle -- tells the tale of a jealous mad scientist (Paul Muller) who murders his faithless wife (Barbara Steele) and her lover. When he remarries, his first wife and her lover return to get revenge.