The small town of Ravennes in the Tyrolian alps is haunted by the vampire Erik Lustveg. When Rod and Dot Blair, descendants of the Lustveg family, come investigating their heritage, they find that the vampire legend is very much alive.; Harry Walters can't stand the nagging of his wife Karen anymore. At a bar he meets the lovely Mara, looking like Karen's twin. Walters falls in love with Mara, kills Karen and then realizes that they were the same person.; Roy and Dot Evans stay overnight at a weird old man's place. They find out that he keeps a boy, his warden, prisoner and plans to kill him, but is afraid of his ghost to haunt him after death.; Playwright Nathan Foxx writes a play which invokes the devil's appearance.; Police detective Dan Noren investigates a murder spree, a feeling of foreboding driving him on. The fiend everybody's been looking for turns out to be himself.