Ray Stricklyn noted in his autobiography "Angels & Demons" that co-star Norma Eberhardt had one blue eye and one brown eye. If you look carefully at a few of her closeups, even in this black and white film, you can notice the difference.
The Hammer classic "Horror of Dracula" was issued shortly after this low budget black and white feature, quickly forgotten in the wake of Christopher Lee's successful portrayal in vivid color.
The original theatrical release prints contained a brief shot, lasting several seconds, that was in color. When the stake is driven into Jennie's heart, there is a close-up of bright red blood spurting from the wound. The approximately three foot section of color film was manually spliced into the black and white prints.
This film was first released as the top half of a double bill with The Flame Barrier.