The house where the movie was set in and filmed was owned and lived in by Andy Milligan located in northern Staten Island.
"Blood" was originally released to theaters on a double bill with "Legacy of Satan".
The film played theaters in New York, Cleveland, and parts of Illinois and Florida as "Black Nightmare in Blood" (on a double feature with "Chinese Hercules") and made Variety's Top 50 Grossing Movies chart one week under this title.
Final film of Patricia Gaul.
Filmed in 10 days.