A doctor framed for murder is sent to a special prison, where he finds himself working with the warden to study blood types, unaware that the warden has contracted a disease that requires a constant replenishment of blood.

I’d seen stills of this movie for years, particularly ones that featured Victor Maddern as the hunchback. The movie itself is supposed to be in color, but my print was so faded that I could only tell it was in color when there was red in the scene (it does make the blood stand out). It’s definitely a movie of its period; like THE VAMPIRE, it attempts to come up with a scientific equivalent of vampirism, and it shows some definite influence from Hammer horrors of the period. It was written by Jimmy Sangster, and stars Donald Wolfit as the evil Dr. Callistratus. It’s not great, but it’s entertaining enough for ersatz Hammer. I hope to see a decent color print some time.