An 18th century doctor convicted of killing a patient using an experimental blood transfusion technique is sent to a prison for the criminally insane, where he is put to work categorizing blood types and perfecting transfusion methods for the creepy warden in the watchable 1958 horror film Blood of the Vampire.
Also really enjoyed 2009's Watchmen. I remember when this comic came out but never read it at the time so I really had no clue as to what this movie was about. Glad I gave it a look. I'd forgotten all about many of those 80s pop culture references.