Hillbillys in a Haunted House (1967)
Country singers on their way to Nashville have car trouble, forcing them to stop at an old haunted mansion. Soon they realize that the house is not only haunted, but is also the headquarters of a ring of international spies after a top secret formula for rocket fuel.
Directed by: Jean Yarbrough
Starring: Ferlin Husky, Joi Lansing, Don Bowman, John Carradine, Lon Chaney Jr., Linda Ho
Links: IMDb, Movie posters, Movie stills