The successful television horror soap opera "Dark Shadows" was the basis for this film featuring the same television cast aboard for some scary action. Frid is 150-year-old vampire Barnabas Collins, who is accidentally released from his coffin by the handyman of the Collinswood mansion.
Frid introduces himself as a cousin from England and gains access to the mansion and the people who live there. When Frid sucks the blood from Bennett, two doctors, Hall and David, determine the cause of death to be vampirism, which is confirmed when Bennett returns from the dead. They dispatch
her permanently with a stake in the heart and discover Frid is the vampire. Hall falls in...