Al Adamson
Albert Victor Adamson Jr.
(July 25, 1929 – June 21, 1995) was an American filmmaker and actor known as a prolific director of B-grade horror and exploitation films throughout the 1960s and 1970s.
The son of silent film stars Denver Dixon and Dolores Booth, Adamson began his career in the film industry at a young age and began directing in the early 1960s, in total helming 33 feature films.
Many of his films, such as "Psycho A-Go-GoBlood of Ghastly Horror," and "Dracula vs. Frankenstein," went on to gain cult status.
After marrying his long-time star Regina Carrol, Adamson retired from filmmaking to pursue a career in real estate.
In 1995, Adamson was murdered by a live-in contractor whom he had hired to work on his house, and subsequently buried beneath his floor.
His death and subsequent trial led to renewed publicity, and was the subject of several true crime television documentaries.
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Doctor Dracula
Doctor Dracula is a 1978 horror film directed by Al Adamson, featuring horror movie icon John Carradine.

Question: Who is the spouse of the director of film Doctor Dracula?
Answer: Regina Carrol