Dark Vengeance is a 1980 fan film set in the Dark Shadows universe. The story centers on Dr. Julia Hoffman's quest to avenge the death of Barnabas Collins, whom she believes was killed by Roger Collins. To achieve her goal, Julia enlists the help of Angelique, the witch who once cursed Barnabas. Together, they confront the Collins family, each member of which is haunted by a specter from their past, leading them toward a terrifying fate.