Nocturna more commonly referred to by its promotional title Nocturna Granddaughter of Dracula is a 1979 film conceived by star Nai Bonet and written and directed by Harry Hurwitz, who was credited as Harry Tampa. This was the fourth and final time John Carradine played Count Dracula he had also played him in House of Frankenstein, House of Dracula and Billy the Kid vs. Dracula. It premiered in France at the Paris Festival of Fantastic Films on March 1, 1979 to coincide with its U.S. release. The movie is copyrighted 1978 in the opening and ending credits as it was filmed in October and November 1978. Nai Bonet appeared in a seminude pictorial in the April 1979 issue of Gallery magazine to promote the film.
In order to increase business and the supply of fresh blood at the hotel, Nocturna books the American disco group Moment of Truth to entertain in the hotels cabaret, The Claret Room. While listening to the group rehearse their music, Nocturna experiences strange sensations which she has never felt before. At the same time, she is attracted to a handsome musician in the group named Jimmy Antony Hamilton. Soon they are having a passionate love affair, but the music that plays as they make love prevents her from making him another victim of her bloodlust. The music continues the strange transformation of Nocturna who sees her reflected image for the first time while dancing. Deeply in love with Jimmy, she disregards grandfather Draculas advice, and runs away to America with him.When they arrive in New York, she leaves the disappointed Jimmy and seeks out the crypt of Jugulia Vein Yvonne De Carlo, an old love of Count Draculas, who lives underneath the Brooklyn Bridge. Nocturna goes to a disco to meet Jimmy where she is transformed again by the soulstirring powers of the music. All the other dancers join them in a fantastic erotic dance. ........
Source: Wikipedia